E2R0002-37-21
REED SWITCH
DATA BOOK
1998
REED SWITCH
INTRODUCTION
1
APPLICATION NOTES
2
DATA SHEETS
3
NOTICE
1.
The information contained herein can change without notice due to product or technical
improvements. Before using the product, please make sure that the information being
referred to is up-to-date.
2.
The outline of action and examples for application circuits described herein have been
chosen as an explanation for the standard action and performance of the product. When
planning to use the product, please ensure that the external conditions are reflected in the
actual circuit, and assembly designs.
3.
When designing your product, please use our product within the specified operating
ranges for operating voltage, power dissipation, and operating temperature. We will not
be held responsible for use and operation of a product other than what is stated below.
Our company assumes no responsibility or liability whatsoever for any failure or
unusual or unexpected operation resulting from misuse, neglect, improper installation, repair, alteration, accident, improper handling, unusual or physical electrical stress including, but not limited to exposure of parameters beyond the
specified maximum ratings or operation outside the specified operating range.
4.
Neither indemnity against nor license of a third party’s industrial and intellectual property
right, etc. is granted by us in connection with the use of the product or the information and
drawings contained herein. We have no responsibility for any infringement of a third
party’s right which may result from the use of a product thereof.
The products listed in this document are intended for use in general electronics equipment
for commercial applications (e.g., office automation, communication equipment, measurement equipment, consumer electronics, etc.). These products are not authorized for use in
any system or application that requires special or enhanced quality and reliability characteristics nor in any system or application where the failure of such system or application
may result in the loss or damage of property, death or injury to humans.
Such applications include, :traffic control, automotive, security, aerospace, nuclear power
control, and medical equipment and life support systems.
5.
No part of the contents cotained herein may be reprinted or reproduced without our
permission.
Copyright 1998 Oki Sensor Device Corporation
E2R0003-37-21
CONTENTS
REED SWITCH
1. INTRODUCTION. ................................................................................................................
3
REED SWITCH PRODUCT OVERVIEW.....................................................................
4
REED SWITCH TYPICAL CHARACTERISTICS .......................................................
5
GENERAL DESCRIPTION ............................................................................................
11
1.
2.
3.
4.
Reed switch characteristics .................................................................................
Applications ..........................................................................................................
Structure and operating principles ....................................................................
Permanent magnet drive ....................................................................................
11
11
12
13
REED SWITCH RELIABILITY ......................................................................................
16
PRECAUTIONS AND APPLICATIONS. ....................................................................
24
DESCRIPTION OF SYMBOLS AND TERMS ..............................................................
28
2. APPLICATION NOTES .......................................................................................................
33
3. DATA SHEETS ......................................................................................................................
39
ORD211 .............................................................................................................................
ORD213 .............................................................................................................................
ORD219 .............................................................................................................................
ORD221 .............................................................................................................................
ORD228VL........................................................................................................................
ORD2211 ...........................................................................................................................
ORD2212 ...........................................................................................................................
ORD229 .............................................................................................................................
ORD2210 ...........................................................................................................................
ORD2210V ........................................................................................................................
ORD234 .............................................................................................................................
ORT551..............................................................................................................................
ORT233..............................................................................................................................
40
48
56
64
72
80
88
96
104
112
120
128
136
REED SWITCH
INTRODUCTION
1
E2R0004-37-21
REED SWITCH PRODUCT OVERVIEW
REED SWITCH
REED SWITCH PRODUCT OVERVIEW
Normally Open
Type
ORD211
ORD213
1
ORD219
ORD221
Reed
Switches
ORD228VL
ORD2211
ORD2212
ORD229
ORD2210
ORD2210V
ORD234
Changeover Type
ORT551
ORT233
4
Pull-in value (PI)
ORD219
ORD213
ORD221
ORD228VL
1A
1A
1A (OFF SET)
1A
[AT] 10 to 40
10 to 40
10 to 30
10 to 30
10 to 45
[AT] 5 min
1A
5 min
5 min
5 min
5 min
Contact resistance
[mW] 100 max
200 max
100 max
100 max
100 max
Electrical
Breakdown voltage
[DCV] 150 min
Character-
Insulation resistance
istics
Electrostatic capacitance
Drop-out value (DO)
Contact rating
150 min (PI≥20)
200 min
200 min (PI≥20)
200 min (PI≥20)
[W] 109 min
109 min
109 min
109 min
109 min
[pF] 0.2 max
0.4 max
0.3 max
0.3 max
0.3 max
1.0
10
10
10
[VA,W] 1.0
Maximum switching voltage
[V] DC 24/AC 24
DC 24/AC 24
DC 100/AC 100
DC 100/AC 100
DC 100/AC 100
Maximum switching current
[A] DC 0.1
DC 0.1
DC 0.5
DC 0.3
DC 0.5
Maximum carry current
[A] 0.3
0.3
1.0
1.0
1.0
[ms] 0.3 max
0.3 max
0.4 max
0.4 max
0.4 max
Bounce time
[ms] 0.3 max
0.3 max
0.3 max
0.5 max
0.3 max
Character-
Release time
[ms] 0.05 max
0.05 max
0.05 max
0.05 max
0.05 max
istics
Resonant frequency
[Hz] 7500±500
11000±2000
5900±400
2750±250
5000±400
Maximum operating frequency
[Hz] 500
500
500
500
500
Coil resistance
[W] 600
600
450
450
450
Standard
Number of Turns
[T] 5000
5000
5000
5000
5000
Coil
Dimensions
Part No.
Operating Temperature Range
Page
f3.3¥10
f3.7¥15
f3.7¥15
f3.7¥15
8
8
6
6
6
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Ultraminiature
Extreme
General Purpose
Miniature Offset
General Purpose
(Rh: rhodium)
Ultraminiature (Rh) Miniature (Rh)
(Rh)
Miniature (Rh)
40
48
56
64
72
5
UL File #70063
E2R0005-37-22
Features (contact material)
[mm] f3.3¥10
REED SWITCH TYPICAL CHARACTERISTICS
Operate time
Operating
REED SWITCH
Contact type
ORD211
REED SWITCH TYPICAL CHARACTERISTICS
Part No.
1
1
Contact type
Pull-in value (PI)
1A
[AT] 20 to 60
[AT] 8 min
ORD229
ORD2210V
ORD2210
1A
1A
1A
1A
15 to 35
20 to 50
15 to 60
20 to 60
7 min
7 min
Contact resistance
[mW] 100 max
100 max
100 max
100 max
100 max
Breakdown voltage
[DCV] 200 min (PI≥20)
150 min
600 min(PI≥35)
250 min (PI≥20)
1000 min
109 min
109 min
1010 min
1010 min
1010 min
0.5 max
0.5 max
0.5 max
0.5 max
Drop-out value (DO)
Electrical
ORD2212
ORD2211
Character-
Insulation resistance
[W]
istics
Electrostatic capacitance
[pF] 0.3 max
Contact rating
DO/PI>0.8 (PI≥20) 6 min
[VA,W] 50 (12 V-3.4 W Lamp) 10
DC 50 W/AC 70 VA DC 50 W/AC 70 VA 100
Maximum switching voltage
[V] DC 100/AC 100
DC 100/AC 100
DC 350/AC 300
DC 200/AC 150
DC 350/AC 300
Maximum switching current
[A] DC 0.5 Inrush 3 A
DC 0.2
DC 0.7/AC 0.5
DC 1.0/AC 0.7
DC 1.0
Maximum carry current
[A] 2.5
0.5
2.5
2.5
2.5
Operate time
[ms] 0.6 max
0.4 max
0.6 max
0.6 max
0.6 max
Operating
Bounce time
[ms] 0.4 max
1.0 max
0.5 max
0.5 max
0.5 max
Character-
Release time
[ms] 0.05 max
0.05 max
0.05 max
0.05 max
0.05 max
istics
Resonant frequency
[Hz] 4600±500
3900±500
2500±250
2500±250
2500±250
Maximum operating frequency
[Hz] 500
500
500
500
500
Coil resistance
[W] 450
450
500
500
500
Standard
Number of Turns
[T] 5000
5000
5000
5000
5000
Coil
Dimensions
[mm] f3.7¥15
f4.6¥21
f4.6¥21
f4.6¥21
6
3
3
3
Operating Temperature Range
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Features (contact material)
Lamp load (Rh)
Vacuum Ultra High
Closed Differential High Breakdown
Page
UL File #70063
80
Low Operating
Voltage (Rh)
Noise (Rh)
High Power
88
96
High Power (Rh)
Breakdown (Rh)
High Power
104
112
REED SWITCH
f3.7¥15
6
Part No.
REED SWITCH TYPICAL CHARACTERISTICS
6
Part No.
Contact type
Pull-in value (PI)
Drop-out value (DO)
ORT551
ORD234
1A
ORT233
1C
1C
[AT] 15 to 50
10 to 25
15 to 30
[AT] 6 min
4 min
5 min
Contact resistance
[mW] 100 max
100 max
100 max
Electrical
Breakdown voltage
[DCV] 250 min (PI≥20)
200 min (PI≥20)
150 min
Character-
Insulation resistance
[W] 1010 min
109 min
109 min
istics
Electrostatic capacitance
[pF] 0.5 max
1.5 max
1.5 max
Contact rating
[VA,W] 10
3
3
Maximum switching voltage
[V] DC 200/AC 100
DC 30/AC 30
DC 30/AC 30
Maximum switching current
[A] DC 0.5
DC 0.2
DC 0.2
Maximum carry current
[A] 2.0
0.5
0.5
1.0 max
[ms] 0.5 max
1.0 max
Bounce time
[ms] 0.5 max
N.O 1.0 max,N.C 1.5 max N.O 1.0 max,N.C 1.5 max
Character-
Release time
[ms] 0.05 max
0.5 max
0.5 max
istics
Resonant frequency
[Hz] 2200±300
6000±4000
6000±4000
Maximum operating frequency
[Hz] 500
200
200
Coil resistance
[W] 500
550
500
Standard
Number of Turns
[T] 5000
5000
5000
Coil
Dimensions
[mm] f4.6¥21
f4.6¥10
f4.6¥21
3
10
3
Operating Temperature Range
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Features (contact material)
Long Life (Rh)
Ultraminiature
Miniature
Changeover (Rh)
Changeover (Rh)
Page
120
128
7
REED SWITCH TYPICAL CHARACTERISTICS
Operate time
Operating
Part No.
REED SWITCH
Part No.
136
UL File #70063
1
REED SWITCH TYPICAL CHARACTERISTICS
REED SWITCH
Unit:mm
ORD211
1
ORD213
ORD219
ORD221
ORD228VL
ORD2211
8
REED SWITCH
REED SWITCH TYPICAL CHARACTERISTICS
Unit:mm
ORD2212
1
ORD229, ORD2210, ORD2210V
ORD234
ORT551
ORT233
9
REED SWITCH TYPICAL CHARACTERISTICS
REED SWITCH
Environmental Characteristics
Environmental conditions are the same for all models of reed switches.
Characteristics
1
Shock Resistance
Test Methods
No malfunction or change in characteristics MIL-STD-202E METHOD
when subjected to shock of 30 G (11 msec). 213B condition J
Remarks
1
No malfunction or change in characteristics MIL-STD-202E METHOD
Vibration Resistance
when subjected to vibration of less than
204D condition D
2
20 G (10 to 1000 Hz).
Operating Temperature
–40°C to 125°C
Lead Tensile Strength
Withstand static load of 2.27 kgf in tension. MIL-STD-202F METHOD 211A
Remarks 1.
2.
—
3
—
When subjected to shock above 30 G, reed switch pull-in value may change.
Because of reed resonance, frequencies over 1 kHz should be avoided. (Frequency
range must be 10 to 1000 Hz.)
3.
Actually, read switches can be operated beyond this temperature range if
certain evaluation is done. It is noted that some magnet decreases magnetization
at low temperatures.
The UL recognition number for our reed switches is E70063.
The CSA recognition number for our reed switches is LR86615.
10
E2R0006-37-21
REED SWITCH
GENERAL DESCRIPTION
GENERAL DESCRIPTION
The reed switch was invented by Dr. W. B.
Ellwood at Bell Telephone Laboratories in 1936.
The first application was made during 1938
when the reed switch was used as a selector
switch in a coaxial carrier equipment. Later,
improvements of the reed switches were made
in parallel with the development of the telecommunications technology. At the same time,
the advantages of reed switches such as the
speedy response time, hermetically sealed contacts, compact size and long mechanical life
have contributed greatly to the development
of telecommunications technology.
From 1956, when research and development
on reed switches began in Japan, innovations
have been made in improving contact performance, reducing overall size, improving manufacturing methods and reducing manufacturing cost. In addition to applications in switching systems, broad applications have been
developed as sensors and controllers in automobile electrical devices, reed relays, and other
instruments of various types.
Our reed switches of extremely superior quality are manufactured based on our own original technology for deactivating contact surfaces, high performance automatic sealing
equipment and contact resistance measurement technology which uses magnetic flux
scaninng tests (FS method).
In particular, our process for deactivating contact surfaces takes the fatal problem of the
conventional rhodium contact reed switch and
suppresses increases in contact resistance due
2.
to organic contamination. Thus, it became possible to manufacture reed switches with stabilized contact resistance. This original technology was awarded the highest award (Schneider
Award) at the 21st Annual National Relay
Conference.
Furthermore, we received the Schneider
Awards at the 36th and 38th Annual National
Relay Conferences for research into reed switch
contact phenomena. Our engineering and technology capabilities are evaluated highly.
1.
Reed Switch Characteristics
Reed switch characteristics are discussed
below.
(1) Reed switches are hermetically sealed
within a glass tube with inert gas and
do not receive any influence from the
external atmospheric environment.
(2) Quick response because of small mass
of moving parts
(3) The structure comprises the operating parts and electrical circuits arranged coaxially. Reed switches are
suited to applications in radio frequency operation.
(4) Reed switches are compact and light
weight.
(5) Superior corrosion resistance and wear
resistance of the contacts assures stable
switching operation and long life.
(6) With a permanent magnet installed,
reed switches economically and easily become proximity switches.
Applications
• Various rotation detectors
• Tape deck automatic stop circuit
• Automobile electronic circuit
Rotation detector
• Temperature detector
• Gasoline tank volume monitor
• Cargo handling equipment
• Float switch
Proximity switch
Others
• Toys
• Leisure products
• Facsimile
• Hydraulic pressure equipment • Consumer electronics equipment
• Pressure detection equipment • Security equipment
• Machine tools
Permanent magnet
• Automatic balance
• Electronic calculators (keyboards)
Key switch
• Data terminal equipment
• Computer I/0 circuits
Switching system
• Answer phone
• Crossbar switching system
• Electronic switching system
• Automatic measuring instruments
Automation
• Ordinary control system
• Plant system control
• Trafic control system
• Process control
Inspection
equipment
• Various types of digital equipment
• Subassembly for synchronous and other types of equipment
Others
• Digital circuit
• Data logger
• Analog circuit
• D/A converter
• Radio equipment
Reed switch
Energized coil
Reed relay
• Radio frequency relay
• Various special purpose relays
• Vending machines
• Transmission equipment
• Broadcasting equipment
11
1
GENERAL DESCRIPTION
1
REED SWITCH
3. Structure and Operating Principles
As shown in Figure 3.1, the reed switches
comprise two ferromagnetic reeds placed with
a gap in between and hermetically sealed in a
glass tube. The glass tube is filled with inert gas
to prevent the activation of the contacts. The
surfaces of the reed contacts are plated with
rhodium.
As shown in Figure 3.2, the reed switch is
operated by the magnetic field of an energized
coil or a permanent magnet which induces
north (N) and south (S) poles on the reeds. The
reed contacts are closed by this magnetic attractive force. When the magnetic field is removed, the reed elasticity causes the contacts
to open the circuit.
Basic reed switch structure
Glass tube
Inert gas
Inert gas
Glass tube
Normally closed
(N.C) reed
Normally open
(N.O) reed
Reed contact
Common (COM) reed
Lead
Make type
reed contact
Changeover type
Figure 3.1
Magnetic flux
Magnetic flux
Energized coil
N
S
(N)
S
N
S
Common
(COM) reed
N
Normally closed
(N.C) reed
S
Normally open
(N.O) reed
N
N
S
N
S
Permanent magnet
N
S
The changeover type reed switch is normally
ON, due to mechanical bias of the common
(COM) reed, which is between the normally
closed (N.C) reed contact and the normally
open (N.O) reed contact.
When an external magnetic field is induced,
the N.C blade is not affected because it is nonmagnetic but the COM reed is attracted by the
N.O reed and moves. When the magnetic field
is removed, COM reed again moves to the N.C
reed by mechanical bias.
Figure 3.2
12
REED SWITCH
4.
GENERAL DESCRIPTION
nent magnet and the determination of its
distance relative to the reed switch are
done according to the following steps.
Permanent Magnet Drive
When a reed switch is driven by a permanent magnet, the selection of the perma1
2
Study of
detecting mechanism
Reciprocating movement,
Rotational movement,
Bias method or
Shielding method
Study of
mounting space
3
4
Selection of
reed switch
Study of magnet
type and decision of
pull-in value of
reed switch
Dimensions and
performance
Does the space have
restriction or limits?
4-1 Permanent magnet drive method
1
Shape,
Material,
Magnet pole layout and
ON-OFF stroke
The following four patterns 1) through 4)
illustrate typical methods to drive the reed
switch by a permanent magnet.
1) Reciprocating method
N
OFF
N
S
OFF
ON OFF
N
OFF
S
ON
OFF
ON
ON
S
N
S
Ring magnet
OFF
Figure 4.1
2) Rotational method
OFF
OFF
N
OFF
N
ON
ON
ON
ON
S
S
OFF
OFF
Bar magnet
N
ON
S
OFF
S
N
ON
ON
OFF
ON
OFF
Four pole ring magnet
Two pole ring magnet
Figure 4.2
3) Bias method
4) Shielding method
S
N
OFF
N
N
S
S
ON
S
OFF
ON
Bias magnet
Shield plate (magnetic material)
Figure 4.3
13
GENERAL DESCRIPTION
REED SWITCH
4-2 Permanent magnet drive characteristics
switch, its pull-in and, drop-out values,
read forming conditions as well as the
permanent magnet material, its shape, and
magnetizing conditions.
Typical drive characteristics are shown
below.
When a reed switch is operated by a permanent magnet, its ON-OFF domains will
differ according to the type of the reed
(1) X - Y characteristic H (horizontal)
Xmm
OFF
HOLD
*
*
ON
—Y
mm
0
Y
mm
X
N
Origin
S
Y
–Y
• With a strong magnet, 3-point operation may occur.
Figure 4.4
(2) X - Z characteristic H (horizontal)
Xmm
OFF
LD
HO
ON
—Z
mm
Z
mm
0
X
S
Origin
Z
—Z
Figure 4.5
(3) X - Y characteristic V (vertical)
Xmm
OFF
D
OFF
HOLD
HOL
1
ON
—Y
mm
ON
–Y
Y
Figure 4.6
14
Y
mm
0 X
N
S
REED SWITCH
GENERAL DESCRIPTION
4-3 ORD225 magnet drive characteristics
Example
4 ¥ 5 ¥ 7 mm
Anisotropic barium ferrite
Surface magnetic flux: 900 Gauss
Magnet:
N
5
Reed switch: ORD225
Pull-in 30.9 (AT)
Drop-out 17.9 (AT)
S
1
7
Unit:mm
4
(1) X - Y characteristic H
(2) X - Z characteristic H
7
7
6
6
5
5
4
4
3
3
OFF
HOLD
OFF
HOLD
Xmm
Xmm
ON
2
1
4
3
2
1
1
0
–Y
ON
2
N
1
S
2
3
4
Y mm
12 11 8 6
0
4 2
—Z
X
2
4
6 8 10 12
Z
S
X
Figure 4.7
Figure 4.8
(3) Pull-in and drop-out values, operating point
X = 2 mm
3
2
—
60
1
OFF
6
HOLD
HOLD
ON
50
5
4
40
30
3
ON
20
ON
2
OFF
1
10
OFF
4
7
Xmm
Pull-in and drop-out values (AT)
70
ON
(4) X - Z characteristic V
0
Ymm
Figure 4.9
1
2
+
3
14 12 10 8
6
–Y
4 2
0
2 4
S
N
6 8
10 12 14
Y mm
X
Figure 4.10
15
E2R0007-37-21
REED SWITCH RELIABILITY
REED SWITCH RELIABILITY
Reed switches play important roles in the recent marked progress in the development of
electronics and mechatronics equipment. Important applications of reed switches cover a
wide variety of fields such as those in communications equipment, office automation equipment, control equipment, and consumer electronics equipment and the demands for these
devices are steadily increasing.
Under these conditions, for example, a failure
in communications equipment can have incalculable influence. Now, it is the obligation of
manufacturers to supply reliable and high quality products.
We are fully aware of our obligations in this
regard. Accordingly, we have adopted a comprehensive quality assurance system with integrated product policy in development, manufacturing, marketing and sales. Moreover, we
will expand our efforts to meet the demands
for improvements in performance and reliability of the products.
We outline below our quality assurance system and the underlying concepts that enable
us to supply reliable quality products. Furthermore, we explain the reliability testing
methods and our original technology which
we use to maintain the high reliability in our
reed switch products.
1.
16
Quality Assurance System and Underlying Concepts
The goals of the quality assurance system
employed by we are as follows:
• Supply of high quality product
• On-time delivery
• Rational product cost
• Customer oriented product marketing.
The flow of product quality assurance
consists of the following four stages:
• Product planning stage
• Development and prototype production stage
• Trial mass production stage
• Mass production stage.
This system is illustrated in the block diagram shown in Figure 1.1.
REED SWITCH
1-1 Product planning stage
To manufacture products that meet market demands and satisfy customer needs,
we carefully study functional and failure
rate requirements, product applications,
environments and other conditions. After
these studies, we specify the material,
structure and the sizes of the products
planned. We then proceed to the design
plan, manufacturing engineering plan, and
process capacity requirement plan.
At this point, we prepare the development plans and time schedules.
1-2 Development and prototype production
stage
At this stage, we concretely establish the
required structure, dimensions, processes
and assembly techniques. Furthermore,
actual prototype testing is carried out to
ensure reliability.
Since most product quality is determined
at the design stage, we build quality into
the product design and pay careful attention to quality assurance during this stage.
Specifically,
(1) After completing the basic design, the
design engineering, production engineering and product reliability departments perform design reviews.
(2) Prototypes are subjected to repeated
functional and reliability testing. At
this point, characteristics and reliability are confirmed while the stability
and capacity of manufacturing processes are also confirmed.
1-3 Trial mass production stage
During this stage, various tests are performed to check the features and reliability mentioned above. These activities are
aimed at the mass production level.
After confirming product quality, we prepare the various mass production standards and start mass production.
1-4 Mass production stage
During the mass production stage, careful
management of purchased materials and
parts, facilities used during the manufacturing process, measuring equipment,
manufacturing conditions and environment is necessary to ensure product quality stipulated during the designing stages.
REED SWITCH
REED SWITCH RELIABILITY
In-process quality and lot assurance inspections are shown in Figure 1.2.
Following lot assurance inspections, the
products are placed in storage awaiting
shipment to customers. Standards are also
set up for handling, storage and transportation during this period, to ensure that no
product quality problems develop before
the product reaches the customers.
17
Product planning
Development
Design
Market
research
Development and
Design
Process Engineering
Production Control
Purchasing
Production
Inspection
Storage
Transportation
Service
Product planning
Quality objectives
Design review and prototype review
Layout program
Technical & quality
standards
Production
planning
Vendor and subcontractor control
Operation standards
Production
process
control
Production
Production process
setup
Process
control
Customer
REED SWITCH RELIABILITY
18
Marketing and Sales
Incoming
inspection
Subcontractor
guidelines
In-process
inspection
Inspection
Final inspection
Quality testing
Storage control
Shipment
Packaging
Transportation
control
Failure analysis
and field quality
survey
Service
Service
Quality Assurance
and Quality Control
Activities
Quality management and education
Quality control program + Reliability program
Quality assurance
Figure 1.1
Quality assurance system
REED SWITCH
Reliability engineering
Quality and reliability
information analysis
Quality education
Failure analysis
REED SWITCH
REED SWITCH RELIABILITY
Glass tube
Cleaning
Fe+Ni alloy wire
Sampling inspection
Press working
Sampling inspection
Barrel polishing
Heat treatment
Contact plating
Sampling inspection
Surface deactivation
treatment
In-process
quality control
Cleaning
Sealing
Leak test
Sampling inspection
• Life expectancy test
• External appearance and
electrical characteristics
Lead plating
Lot assurance inspection
Figure 1.2
Characteristic
sorting
Sampling inspection
Contract
resistance test
Sampling inspection
Lot
inspection
Sampling inspection
Shipment
inspection
Quality control flow chart
All products are subjected to thorough quality
checks as described above and shipped to the
customers. If, by any chance, a failure does
occur after delivery to the customers, defective
products are processed and the problem is
rectified immediately to minimize the inconvenience to the customers in accordance with
the flow chart shown in Figure 1.3.
Quality improvement activities are employed
to assure high quality product performance
and reliability following the quality assurance
and quality control flow shown in Figure 1.4.
19
REED SWITCH RELIABILITY
REED SWITCH
Request for technical improvement
based on detailed analysis
Engineering department
(Design and process
engineering)
Report on results of
investigation and
improvement
Failure report and failed
sample analysis request
Failure report
Sales
department
Customer
Failure analysis report
Request for
Quality assurance department
(Quality assurance and quality control) technical
improvement
Report of investigation
and analysis
Technical
improvement
direction
Report on results of
investigation and study
Request for manufacturing improvement
Figure 1.3
Usage quality
• Transportation control
• Stock control
• Packaging
• Reliability test
• Product test
• Screening
• Process control
• In-process inspection
• Incoming inspection
Production quality
Figure 1.4
20
Manufacturing
department
Failure report process flow chart
• Service
• Failure analysis
• Customer information
analysis
Target quality
Quality assurance
and quality control
• Quality and reliability
information
• Quality evaluation
• Reliability engineering
• Quality control and education
• Operation standards
• Technical standards
• Quality standards
• Design review
• Prototype review
• Marketing
• Product planning
• Quality objectives
Desing quality
Quality assurance and quality control flow
REED SWITCH
2.
Our Original Technology Supports High
Reliability.
2-1 Deactivated rhodium contacts
Our reed switches are extremely reliable
because of the use of rhodium as the contact material.
Rhodium has two superior properties for
use as contact material. The first is its
extreme hardness which is effective in
preventing sticking. The second is the high
melting point which remarkably reduces
contact surface wear caused by joule heat
and arc discharge. However, since
rhodium belongs to the platinum group, it
is absorptive and catalytic.
Therefore, rhodium-plated contacts adsorb organic impurities and form polymers during operations as shown in Figure 2.1. This greatly increases the contact
resistance. In the low-level load operation, this phenomenon is particularly noticeable.
In order to deactivate the rhodium-plated
contact, we have developed a unique high
temperature oxygen treatment. This technique makes the organic impurities built
on the surface burned with oxygen and
forms oxygen molecule layer on the contact which in turn provide stable contact
resistance. This unique method won the
highest prize (Schneider Award) at the
21st National Relay Conference in Oklahoma, USA, in 1973.
Our technology is valued highly, and at
the 36th and 38th Annual National Relay
Conferences we also received the
Schneider Awards for research on reed
switch contact surface phenomena.
Our patents have been registered in Japan
(Pat. No. 916386), USA (Pat. No. 3857175)
and West Germany (Pat. No. 2303587).
2-2 High performance, automatic sealing
equipment
Sealing is the process of forming the reed
switch from the assembly of pressed and
plated reed and glass tube. This is one of
the most important processes which demands severe quality control and management. At the time of sealing, working
temperature reaches 1000 °C which makes
the glass tube impurities evaporate and
REED SWITCH RELIABILITY
causes the reed switch contact surface to
be contaminated. To prevent the effects of
these phenomena, we have developed severe standards for selection of glass material. In addition we also use unique technology for automatic sealing. Improvements in manufacturing method such as
these enable us to produce extremely high
quality reed switches.
2-3 Magnetic flux scanning test (FS test) for
measuring contact resistance
Sealing processes are performed under
severe quality control and management.
However, there is still a slight possibility
for magnetic foreign particles to enter into
the glass tube. We have conducted extensive research into the detection of
microparticles and we developed the
“Magnetic Flux Scanning Test” as an extremely high reliability technique for measuring contact resistance.
A general description is shown in Figure
2.2 where the magnetic attractive force
from multiple layers of coils cause the
magnetic foreign particles to move to the
contact part of the reed switch. During
check of the contact resistance, foreign
particles are detected.
Since we use this unique technology, we
have succeeded in making rapid progress
toward improving reed switch reliability.
21
REED SWITCH RELIABILITY
Oxigen Treatment
Fe + Ni
Oxigen
Treatment
450˚C-7min
7 6 5
Untreated
OCHOCHOCHOCH
After Plating
REED SWITCH
4
3 2
1
7 6 5
4
3 2
1
1
6
2
7
3
8
4
9
5
10
OCHOCHOCHOCH
Rh
Au
CO 2 H 2O CO 2 H 2O
Fe + Ni
Oxide layer
Fe + Ni
H 2O
Oxide layer
H 2O
OCHOCHOCHOCH
Sealing
Fe + Ni
Fe + Ni
Fe + Ni
10.0
10.0
1.0
1.0
0.1
O
106
Number of operations
Contact resistance
After
Life
Expectancy
Test
Polymer
Oxide layer
Contact resistance
Evaluation
Before
Life
Expectancy
Test
Fe + Ni
0.1
O
106
Number of operations
Figure 2.1
3.
Figure 2.2 Magnetic Flux Scanning Test (FS Test)
Reliability Testing Methods
Parameter
Temperature and Humidity Cycle
Temperature Cycle
Specification
Unit
Test conditions
–10 to 65
°C
MIL-STD-202F 106E
(80 to 98)
(%)
(Refer to Figure 2.3)
–55 to 125
°C
Chart is shown in Figure 2.4.
High Temperature Storage
125
°C
500H
Low Temperature Storage
–40
°C
500H
Shock Resistance
30
G
MIL-STD-202F 213B Condition J
Vibration Resistance
20
G
MIL-STD-202F 204D Condition D
22
REED SWITCH
REED SWITCH RELIABILITY
˚C
+65
10 cycles
+25
–10
3
Time 2.5
(h)
Humidity
(%) 90 to 98
2.5
80
to 98
2.5
3
90 to 98
2.5
2
80
to 98
3
3
90 to 98
Figure 2.3 Temperature and humidity cycle chart
˚C
+125
5 cycles
+25
–55
Time
(min)
30
15
30
15
Figure 2.4 Temperature cycle chart
23
E2R0008-37-21
PRECAUTIONS AND APPLICATIONS
PRECAUTIONS AND APPLICATIONS
1.
Contact Protection Circuit
When a reed switch is to be connected to
the inductive load or the load where surge
current or rush current flows (such as
capacitance load, lamp, long cable, etc.),
the following contract protection circuits
are also required for the red switch.
1-1 Inductive loads
In case an electromagnetic relay, electromagnetic solenoid, or electromagnetic
counter which has inductance component
is provided as a load in a circuit, the energy stored in the inductance will cause an
inverse voltage when the reed contacts
break. The voltage, although dependent
on the inductance value, sometimes
reaches as high as several hundred volts
and becomes a major factor to deteriorate
the contacts. In order to prevent this many
protection circuits are provided, typical
examples of which are shown in Fig. 1.1.
1-2 Capacitive loads
In case a capacitor is provided in series or
in parallel with the reed switch contacts in
a closed circuit, the rush current which
flows at the time of charge and discharge
of the capacitance will cause much deterioration of the reed contacts. Fig. 1.2 shows
typical examples of the protection circuits
to prevent the rush current.
+E
RO
C
RK
IS
a) Current limiting resistance(RK) is installed
in the circuit to protect contact. Rk(W) should
satisfy the equation below.
Is=
Voltage stored across C
RK
< 0.I(A)
+E
+E
a) Contact protection by capacitor
and resistance
(Also possible at the load
terminal.)
Load
I(A)
RO
RI
C
R
I2
C=— [µF]
10
E
R=
[W]
10I(I+E/50)
C
R
d) Resistance (R) is installed in the circuit
to protect contact. R should be between
50 and 500 W
+E
Figure 1.2
Load
b) Contact protection by varistor
When the contact open time is
long, varistor should be put into
the load terminal.
+E
Load
c) Contact protection by diode
Breakdown voltage of diode
should be larger than E volt.
Forward current of diode
should be almost equal to
5E/coil resistance.
Figure 1.1
24
REED SWITCH
1-3 Lamp load
In case of the lamp load, a tungsten filament lamp is generally used. The tungsten filament lamp features that its resistance is small immediately before it is
switched on and will become larger after
switched on, followed by lighting with
steady-state current. If the reed switch is
used for switching in this lamp circuit, the
rush current (5 to 10 times the steady-state
current) will flow in the contacts immediately after the lamp being turned on, and
often cause melting or sticking of the reed
contacts. The circuit with a lamp load is,
therefore, considered similar to a circuit
REED SWITCH
PRECAUTIONS AND APPLICATIONS
(1) Cutting and bending positions must
be determined with reference to the
center of the contact or to the end of
the lead. If the position is measured
from the end of the glass tube, the
contact center position may be moved.
(2) When in cutting on bending the leads,
be sure to protect the sealing portions.
As shown in Figure 2.1, the lead should
be placed firmly by a jig.
(3) After the process, confirm that there is
no crack or chipping in the glass tube.
with a capacitor where large current flows
to charge the capacitor, thus requiring the
contact protection circuit. Fig. 1.3 shows
examples of protection circuits.
+E
R: Current limiting resistance
R should be determined to satisfy
Is < 0.5 A to 1A
Is
R
Fixed jig
Lead bending
+E
R: Parallel resistance
R is put into the circuit to preheat
lamp filament and increase
the resistance. R is given by the
following.
R
R<
Fixed jig
Lead cutting
Filament resistance
3
Figure 2.1
Figure 1.3
1-4 Wiring capacitance
When wiring a load and reed switch over
long distance, electrostatic capacitance
arising from the cable can influence the
reed switch contact. Therefore, inductance
LS should be used. Ls value differs according to the load current but should be
in the range of 0.5 to 5 mH.
Ls
(
)
Wiring
capacitance
Load
50 m or more
2.
Reed Switch Lead Forming
When reed switches are used, usually the
leads are cut or bent. However, precautions should be taken when performing
these processes.
2-1 Cutting the leads
Since the leads of a reed switch comprise
part of the magnetic circuit, shortening
the leads by cutting will cause the required ampere turns for pull-in and dropout to increase as shown in Fig. 2.2. Here
in this figure, a standard coil was used in
making measurements and there may be
differences when the reed switch is driven
by a permanent magnet depending on the
difference of the shape of magnet and
orientation of magnetization. Therefore,
it is necessary to actually examine the
change of the pull-in and drop-out values
by the magnet and drive method to be
used.
CHANGE IN AT VALUE (AT)
If no resistance is to be put into the circuit, use
ORD2211
20
ORD225
15
ORD234
10
5
0
4
8
12
16
20
LEAD CUTTING LENGTH 1+ 2mm
Figure 2.2
25
PRECAUTIONS AND APPLICATIONS
2-2 Bending the leads
As in the case of cutting the leads, influence on the pull-in and drop-out characteristics must be checked by actually using the magnet and the driving method
planned.
2-3 Measuring the electrical characteristics of
reed switches after cutting or bending.
When the leads of a reed switch are cut, it
is not possible to measure electrical characteristics by using a standard test jig.
However, it is possible to measure these
characteristics after processing if a special
jig is made. It is also possible to measure
electrical characteristics of the reed switch
with a bent lead by using the jig similar to
the one used for a reed switch with a cut
lead. However, when both leads are bent,
the reed switch cannot be inserted into a
coil and therefore cannot be measured.
Reed Switch Mounting
Generally, a reed switch is mounted by
soldering or welding. When the mounting space (including its vicinity) is nonmagnetic, there is no influence on operation but when the material is magnetic,
operation characteristics do change. Therefore, it is necessary to check these in consideration of the assembling conditions.
3-1 Soldering
Leads are tin plated and are soldered ordinarily (250 to 300°C). When soldering,
keep the soldering point at least 1 mm
away from the glass end. In addition, there
is also a danger of causing the glass tube to
be damaged by heat if the soldering is
done for a long time. Keep the process to
less than five seconds.
3-2 Welding
When welding, also keep the welding
point at least 1 mm away from the glass
end. When using a large power supply for
welding, heat generated in lead may cause
damage to the glass tube. Precautions to
prevent this are necessary.
Welding current may also induce magnetic field and cause the reed switch to
operate. Therefore, it may introduce welding current to the contact and contact may
be melted. Precautions are also necessary.
REED SWITCH
3-3 Ultrasonic welding
Be very careful when using ultrasonic
welding methods to weld reed switches
or using ultrasonic welder in the vicinity
of a reed switch.
The ultrasonic can change the contact gap
and the characteristics of the reed switch.
3-4 Mounting on a printed circuit board
When mounting on a printed circuit board,
the reed switch should float on the board
as shown in Figure 3.1 or hole should be
opened in the printed circuit board to
prevent the glass from touching the board
surface. Otherwise, it is possible to cause
a damage to the glass tube because of
physical shocks or other adverse elements
applied externally to it.
4.
Reed Switch Resin Mold
3.
26
Printed circuit board
Figure 3.1
When reed switches are molded with resin,
it is possible for the resin stress to break or
damage the glass tube. Therefore, the resin
should be selected carefully. Moreover, it
is necessary to perform temperature cycle
testing to ensure selection of safe resin
material.
On the other hand, there is no problem if
silicone or other soft resin is used.
5.
Dropping Reed Switches
Avoid dropping reed switches. If a reed
switch is dropped onto a hard surface
from a height more than 30 cm, it is possible to cause the characteristics to change.
If a reed switch has been dropped, carefully inspect its characteristics and exterior appearance before use.
If a reed switch has been subjected to
shock more than 30 G, the pull-in value
may change.
PRECAUTIONS AND APPLICATIONS
REED SWITCH
Figure 3.2
6.
Relation to Characteristic Values Given
by Other Makers
Measurement methods are manufacture
dependent. Therefore, the pull-in value
may be different depending on the measurement conditions (standard coils and
overall length of the reed switch are different). Accordingly, it is necessary to correlate the characteristics.
7.
Certified Pull-in Value for Reed
Switches
The pull-in value (four digits) shown on
the reed switch package is selected range
values. The certified pull-in value for this
selected range has a tolerance of ±2AT.
Example: Certified pull-in value for ORD 211
(2025) is 18 to 27 AT.
8.
Specifications
Specifications given here are subject to
change for improvement without notice
to the users. Please make sure that you
have the latest values and specifications
before actual use.
27
E2R0009-37-21
DESCRIPTION OF SYMBOLS AND TERMS
REED SWITCH
DESCRIPTION OF SYMBOLS AND TERMS
Following is generally used terms regarding the
basic operating characteristics of the reed switches.
Term
Pull-in Value
Symbol
Unit
Description and Test Methods
PI
AT
•This is the most important operating characteristic of a reed switch. It is given
as the product of the energizing current for the coil necessary to operate the
switch and the number of turns of the coil winding.
This is the sensitivity of reed switch. High sensitivity means low pull-in value.
Drop-out Value
DO
AT
•Drop-out value is obtained by taking the product of the value of the current
flowing in the coil at the time when the contacts are released and the number
of turns of the coil windings. Drop-out value is correlative to pull-in value and
is a secondary value.
•Test method (1) Measurement circuits of pull-in and drop-out values
Make type
beginning of winding (top)
mA
+
Detector
–
20 mA
Coil saturation current
100 AT
(SOAK)
Oki standard coil
Voltage between contacts 2 to 10 V ; DC
Current between contacts
(less than 10 mA)
End of winding (bottom)
100 AT
Coil waveform
Contact waveform
Pull-in value
Drop-out value
Current at time of operation x Number of turns in standard coil
(500 AT); Indicated in AT
Transfer type
mA
Beginning of winding (top)
N.C
N.O
+
Detector
–
COM
End of winding (bottom)
Coil saturation current
(SOAK)
Oki standard coil
20 mA
100 AT
Voltage between contacts 2 to 10 V ; DC
Current between contacts
(less than 10 mA)
100 AT
Coil waveform
N.O Contact waveform
Pull-in value
Drop-out value
Current at time of operation x Number of turns in standard coil
(500 AT); Indicated in AT
28
REED SWITCH
Term
DESCRIPTION OF SYMBOLS AND TERMS
Symbol
Unit
Description and Test Methods
Note: Measure after making sure that the center of the coil and the center of
the reed switch contacts are aligned. Initially, apply soak current (100
AT) then return to zero (AT). Next, apply the current in the same
direction and measure it. The polarity of the current applied to the coil
should make the direction of the energized magnetic field to be the same
as the direction of terrestrial magnetism. (The leading end of the coilwire at the top should have positive polarity.)
Contact
Resistance
CR
mW
•Contact resistance is the resistance between contacts when the contacts are
closed and includes conductor resistance.
•Test method (2) Measurement circuit of contact resistance
Make type
mA
Constant current
power supply
+
mV
–
Microohmmeter
(YHP-4328A or equivalent)
Oki standard coil
{
}
Applied voltage for measurement (less than 10 V DC)
or Microohmmeter
Current for measurement (less than 10 mA)
Coil current
20 mA
(100 AT)
Transfer type
mA
N.C
Constant current
power supply
N.O
+
mV
–
Microohmmeter
(YHP-4328A or equivalent)
COM
Oki standard coil
{
}
Applied voltage for measurement (less than 10 V DC) or Microohmmeter
Current for measurement (less than 10 mA)
Coil current
Breakdown
Voltage
V
20 mA(100 AT) N.O
0 mA( 0 AT) N.C
•Specifies a maximum value of transient voltage over the contacts caused by
surge current or other external factors. Below this rated value, the reed switch
operates without destruction of its contact insulation resistance.
29
DESCRIPTION OF SYMBOLS AND TERMS
Term
Symbol
Unit
REED SWITCH
Description and Test Methods
•Test method: MIL-STD-202F METHOD301 Breakdown voltage shown here is
the value measured for the switch whose pull-in value is 20 AT or more. The
criterion of leak current is less than 0.1 mA for one minute.
Insulation
Resistance
V
•Insulation resistance is the resistence between lead ends and the resistance
against leak current across the reed switch glass tube or its surface.
•Test method: MIL-STD-202F METHOD302
Measurement is made by using a DC 100 V super megger.
Electrostatic
Capacitance
pF
•Electrostatic capacitance is the value of capacitance between open contacts.
The overlap of reed switch contacts is uniform. Therfore, when the contact
gap becomes large, accompanying an increase in pull-in value, the electrostatic
capacitance becomes small.
Erectrostatic capacitance is measured at 1 MHz-0.1 V
Contact Rating
W
VA
•Contact rating is the maximum product of the voltage and current at which
contacts operate and contact switching performance is stable. This is a very
important value. In order to anticipate constant life expectancy and assure
reliability when switching is performed, the contact rating must not be
exceeded and it is less than the product of (maximum switching voltage) X
(maximum switching current).
Contact rating is also called contact capacitance or contact power allowance.
Maximum
Switching
Voltage
V
•Maximum switching voltage is the maximum voltage at which contacts can be
switched. It is used as a reference value of voltage for contact switching
performance. In order to anticipate constant life expectancy and assure
reliability when switching is performed, the maximum switching voltage must
not be exceeded.
Maximum switching voltage is also called rated contact voltage, maximum
A
Maximum
Switching
Current
working voltage, or allowable contact voltage.
•Maximum switching current is the maximum current at which contacts can be
switched. It is a reference value of current for contact switching performance.
In order to anticipate constant life expectancy and assure reliability when
switching is performed, the maximum switching current must not be
exceeded.
Maximum switching current is also called rated contact current, maximum onoff contact current, or rated on-off current.
30
REED SWITCH
Term
DESCRIPTION OF SYMBOLS AND TERMS
Symbol
Maximum
Carry Current
Unit
Description and Test Methods
A
•Maximum carry current is the maximum current which can flow continuously
over the closed contact. In order to anticipate constant life expectancy and
assure reliability, the maximum switching carry current must not be exceeded.
Maximum carry current is also called rated contact carry current or allowable
contact carry current.
Operate Time
Top
ms
•Operate time means the time required for the contacts to close after applying
voltage to the energizing coil. Unless otherwise specified, operate time does
not include bounce time.
Bounce Time
Tb
ms
•Bounce time means the time between the time when the contacts closed
Release Time
Tis
ms
(ms)
•Release time is the elapsed time before the contacts are opened after the coil
initially and the time when they come to close stably.
energizing voltage is removed.
Test method (3) Time characteristics measurement circuit
Make type
Coil current
20 mA
+
Mercury
wetted
Oki
relay
standard
coil –
1.5 V
1 kW
V
G Tr
Oscilloscope
25 Hz DUTY 50
Pulse generator
Coil waveform
T1 : Operate time
T2 : Bounce time
T3 : Release time
Contact waveform
T1
T2
T3
Transfer type
Coil current
20 mA N.C N.O
+
Mercury
wetted
1 kW
Oki
relay
standard
V
coil –
G Tr
Oscilloscope
COM
25 Hz DUTY 50
1.5 V
Pulse generator
31
DESCRIPTION OF SYMBOLS AND TERMS
Term
Symbol
Unit
REED SWITCH
Description and Test Methods
Coil waveform
N.O T1 : Operate time
T2 : Bounce time
T3 : Release time
N.C T4 : Operate time
T5 : Release time
T6 : Bounce time
T7 : Transfer time
(N.O N.C)
T8 : Transfer time
(N.C N.O)
N.O contact
waveform
N.C contact
waveform
T8
T3
T6
T5
T7
T4
T1
T2
Note: Measure after making sure that the center of the coil and the center
of the reed switch contacts are aligned.
Resonant
Frequency
Hz
Maximum
Operating
Frequency
Hz
•Resonant frequency is the vibration frequency inherent to the reed
switch. If the reed switch is subjected to vibrations which have the similar
frequency to the resonant frequency, it may cause misoperation.
•Maximum operating frequency is the maximum drive frequency. The reed
switch can be operated with a frequency higher than the maximum operating
frequency. However, operation with such a frequency may cause an endless
bouncing.
Standard Coil
Number •The standard coil is the coil provided for measuring reed switch
characteristics. The standard coil varies depending on the type of the reed
switch.
Standard coil specifications
C
D E
A
B
Number
A
B
C
D
E
Coil Resistance
(Number of turns)
No.3
21
25
f4.6
f3.5
f11.0
500 W
(5000T)
ORD229
ORD2210
ORD234
Measured Reed Switch
ORD234V
ORT233
32
(mm)
No.6
No.8
15
10
19
12
f3.7
f3.3
f2.9
f2.3
f11.0
f11.0
450 W
600 W
(5000T)
(5000T)
ORD219
ORD211
ORD221
ORD213
ORD228VL ORD214
ORD2211
ORD2212
No.10
10
26
f4.6
f3.5
f16.0
550 W
(5000T)
ORT551
REED SWITCH
APPLICATION NOTES
2
APPLICATION NOTES
33
E2R0010-37-21
APPLICATION NOTES
APPLICATION NOTES
The potential applications for reed switches
are very broad. The main applications for reed
switches are in automotive electronic devices,
various types of instruments and testers, household appliances and so forth.
Here, some actual examples of reed switch
applications are provided.
2
34
REED SWITCH
REED SWITCH
APPLICATION NOTES
Reed switch application examples – I
Reciprocating operation
Reciprocating operation
N
OFF
S
N
OFF
ON
S
ON
2
OFF
Position sensor
Key switch
OFF
Reed switch
ON
N
Reed
switch
Magnet
Magnet
S
Application examples: Various types of button
switches
Keyboard
Position sensor
Application examples: Various types of door
sensors
Security system
Position sensor
Reed switch
N
S
Magnet
Reed switch
N S
Magnet
Application examples: Various types of position sensors
Conveyor control
Application examples: Automatic balance
35
APPLICATION NOTES
REED SWITCH
Reed switch application examples – II
position sensor
N
Rotating operation
OFF
S
N
N
ON
S
ON
S
OFF ON OFF
2
OFF
Rotation sensor
Position sensor
Reed switch
Magnet
Float
Magnet
S
N
Reed switch
Application examples: Liquid level sensor
Various float switches
Position sensor
Application examples: Various types of rotation sensor
Rotation sensor
Reed switch
Reed switch
N
S
Magnet
Magnet
Fluid
Pressure
Finned rotor
Application examples: Pressure sensor
Wind pressure sensor
36
Application examples: Various types of fluid
level sensor
Flow measurement Instruments for water,
gas, and wind
REED SWITCH
APPLICATION NOTES
Reed switch application examples – III
Miscellaneous reed switch application examples
Shielding operation
OFF
I Temperature sensor
(Combination of thermal ferrite)
ON
N
S
Magnetic substance
(shielded plate)
2
Thermal reed
switch
F
OF
OFF
ON
Reed switch
N
ON
S
Magnet
Application examples: Electronic cooker
Heat detector
I
Tilt detection
OFF
Magnet
OFF
OFF
S
N
Application examples: Pulse generator
ON
Reed switch
Application examples: Security system
Earthquake sensor
I Security system
Transfer reed switch
N Magnet
O
N
S
O
FF
ON
Reed switch
Magnet
Application examples: Detecting the passing of
various types of magnetic substances
od!
Oh my g
Intruder
alert
gottcha
Burgler
security man
37
2
N
S
Brake fluit float
(ORD2211) (Lamp load)
• Monitor
Reed switch
Reed switch
Float magnet
Engine oil float
(ORD221)
• Monitor
• Electric fan
• Monitor
Engine temperature sensor
(ORD221, ORD225)
Reed switch application examples (automobile)
Ring magnet
Lamp burn out sensor
(ORD2212)
• Monitor
Speed sensor
(ORD234) (ORD2212) (Low
operating noise)
• Engine control
• Automatic door lock
• Automatic speed control
• Power steering control
APPLICATION NOTES
38
Reed switch
Reed switch
Sensor probe
REED SWITCH
Thermal ferrite
REED SWITCH
ORD211
3
DATA SHEETS
39
E2R0011-37-21
REED SWITCH
ORD211
ORD211
REED SWITCH
General Purpose Ultraminiature (Low-level Load 24 V Max.)
GENERAL DESCRIPTION
The ORD211 is a small single-contact reed switch designed for general control of low-level loads
less than 24 V. The contacts are sealed within the glass tube with inert gas to maintain contact
reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
3
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
MAX f2.0
f0.4
MAX 10.0
35.7 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
40
REED SWITCH
ORD211
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
Drop-out Value
DO
Contact Resistance
CR
Breakdown Voltage
—
Insulation Resistance
Rated Value
Unit
Min.
Typ.
Max.
—
10
—
40
AT
—
5
—
—
AT
—
—
—
100
mW
—
150
—
—
VDC
—
—
109
—
—
W
Electrostatic Capacitance
—
—
—
—
0.2
pF
Contact Rating
—
—
—
—
1.0
VA
Maximum Switching Voltage
—
—
—
—
24 DC
AC
V
Maximum Switching Current
—
—
—
—
0.1
A
Maximum Carry Current
—
—
—
—
0.3
A
(1) Drop-out vs. Pull-in
3
(2) Contact resistance
(Measurement length; 22 mm)
99.9
AT
50
99
95
Cumulative frequency percent
Drop-out
40
30
20
10
0
10
20
30
Pull-in
40
50
90
80
70
60
50
40
30
20
10
5
1
0.1
AT
40
60
80
100
mW
Contact resistance
41
ORD211
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
AT
Pull-in
90
80
70
60
50
40
30
20
10
5
1
0.1
10 10
3
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
42
40
50
AT
10 14
W
REED SWITCH
ORD211
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.3
ms
Bounce Time
—
—
0.3
ms
Release Time
Resonant Frequency
Maximum Operating Frequency
—
—
0.05
ms
7000
7500
8000
Hz
—
—
500
Hz
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
99
ms
0.5
3
Cumulative frequency percent
95
0.4
Operate time
(25 Hz : 100 AT energized)
99.9
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
0.1
AT
0.2
0.3
0.4
ms
Bounce time
Pull-in
(3) Release time
(4) Resonant frequency
(25 Hz : 100 AT energized)
99.9
ms
15
99
10
5
0
10
20
30
Drop-out
40
50
AT
Cumulative frequency percent
Release time
95
90
80
70
60
50
40
30
20
10
5
1
0.1
7000
7500
8000
Hz
Resonant frequency
43
ORD211
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
30
PI
20
90
80
70
60
50
40
30
20
10
5
1
DO
3
0.1
10
0
2
4
6
Breaking load
0
mW
Contact resistance
80
60
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
CR
40
Rate of change (percent)
30
DO
20
PI
10
0
–10
–20
–30
–40
–20
0
20
40
Temperature
44
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD211
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
AT
60
30
PI
20
30
PI
20
DO
DO
10
10
0
0
mW
80
60
Contact resistance
Contact resistance
mW
3
CR
40
Before test
80
60
40
After test
(4) High temperature storage test
CR
Before test
(5) Low temperature storage test
( –40 °C - 500 H)
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(125°C - 500 H)
AT
60
30
PI
20
30
PI
20
DO
DO
10
10
0
0
mW
Contact resistance
Contact resistance
mW
80
60
After test
CR
40
Before test
After test
80
60
CR
40
Before test
After test
45
ORD211
REED SWITCH
(6) Shock test
(open Æ close)
(30 G - 11 ms)
AT
60
G
1500
40
1000
30
Acceleration
Pull-in and Drop-out
50
PI
20
DO
Misoperation
area
10
500
3
0
Contact resistance
mW
80
CR
0
60
40
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
30
PI
20
DO
10
0
mW
Contact resistance
20
30
Pull-in
Before test
80
CR
60
40
Before test
46
10
After test
40
50
60
AT
REED SWITCH
ORD211
LIFE EXPECTANCY DATA: ORD211
Load conditions
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
No failure
5 mA
1 mA
100 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
Number of operations
5 7 10 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
Load conditions
Voltage : 12 VDC
Current : 5 mA, 10 mA, 100 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
No failure
90
70
50
30
100 mA
10 mA
5 mA
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
2
3
Number of operations
5 7
10 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
Load conditions
Voltage : 24 VDC
Current : 1 mA, 10 mA, 50 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
No failure
50 mA
10 mA
1 mA
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
Number of operations
2
3
5 7
10 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
47
3
E2R0012-38-22
REED SWITCH
ORD213
ORD213
REED SWITCH
Extreme Ultraminiature (Low-level Load 24 V Max. for General Control)
GENERAL DESCRIPTION
The ORD213 is a small single-contact reed switch designed for general control of low-level loads
less than 24 V. The reed contacts are sealed within the glass tube within inert gas to maintain
contact reliability.
Features
(1) The reed contacts are hermetically sealed within a glass tube with inert gas and do not receive
any influence from the external atomospheric environment.
3
(2) High response speed
(3) The operating system and electrical circuits are coaxially composed and the ORD213 is suited
to the applications for high frequency transmission.
(4) Compact and light weight
(5) The superior corrosion resistance and wear resistance of the contacts assure stable switching
operation and long life.
(6) With a permanent magnet installed, the reed switch economically and easily becomes a
proximity switch.
External Dimensions (Unit:mm)
MAX f1.8
f0.3
MAX 7.0
35.8 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
48
REED SWITCH
ORD213
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
—
Drop-out Value
DO
Contact Resistance
CR
Breakdown Voltage
Insulation Resistance
Rated Value
Unit
Min.
Typ.
Max.
10
—
40
—
5
—
—
AT
—
—
—
200
mW
—
—
150
—
—
VDC
—
—
109
—
—
W
Electrostatic Capacitance
—
—
—
—
0.4
pF
Contact Rating
—
—
—
—
1.0
VA
Maximum Switching Voltage
—
—
—
—
24 DC
AC
V
Maximum Switching Current
—
—
—
—
0.1
A
Maximum Carry Current
—
—
—
—
0.3
A
(1) Drop-out vs. Pull-in
AT
3
(2) Contact resistance
(Measurement length; 22 mm)
99.9
99
AT
50
Cumulative frequency percent
95
Drop-out
40
30
20
10
90
80
70
60
50
40
30
20
10
5
1
0.1
0
100
10
20
30
Pull-in
40
50
60
AT
120
140
Contact resistance
160
180
mW
49
ORD213
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
60
AT
Pull-in
90
80
70
60
50
40
30
20
10
5
1
0.1
10 10
3
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
50
40
50
60
AT
10 14
W
REED SWITCH
ORD213
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.3
ms
Bounce Time
—
—
0.3
ms
Release Time
Resonant Frequency
Maximum Operating Frequency
—
—
0.05
ms
9000
11000
13000
Hz
—
—
500
Hz
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
3
99
ms
0.5
Cumulative frequency percent
95
0.4
Operate time
(25 Hz : 100 AT energized)
99.9
0.3
0.2
90
80
70
60
50
40
30
20
10
5
1
0.1
0.1
0
0
10
20
30
40
50
0.1
AT
Pull-in
(3) Release time
0.2
0.3
0.4
ms
Bounce time
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
95
10
5
0
10
20
30
40
50
AT
Cumulative frequency percent
Release time
ms
15
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
9000
10000
11000
12000
Hz
Resonant frequency
51
ORD213
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
99.9
(2.27 kg - 10 sec)
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
30
PI
20
90
80
70
60
50
40
30
20
10
5
1
DO
3
0.1
10
0
2
4
6
Breaking load
0
mW
Contact resistance
200
150
CR
100
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
PI
10
DO
0
–10
–20
–30
–40
–20
0
20
40
Temperature
52
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD213
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55 °C to 125 °C)
30
PI
20
30
PI
20
DO
DO
10
10
0
0
mW
200
Contact resistance
Contact resistance
mW
3
CR
150
100
Before test
200
150
CR
100
After test
(4) High temperature storage test
Before test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
30
PI
20
30
PI
20
DO
DO
10
10
0
0
mW
Contact resistance
mW
Contact resistance
After test
200
150
CR
100
Before test
After test
200
150
CR
100
Before test
After test
53
ORD213
REED SWITCH
(6) Shock test
(open Æ close)
(30 G)
AT
60
G
1500
40
1000
30
Acceleration
Pull-in and Drop-out
50
PI
20
DO
Misoperation
area
10
500
3
0
Contact resistance
mW
200
0
150
100
Before test
After test
(7) Vibration test
(20 G)
AT
60
Pull-in and Drop-out
50
40
30
PI
20
DO
10
0
Contact resistance
mW
200
150
CR
100
Before test
54
10
20
30
Pull-in
CR
After test
40
50
60
AT
REED SWITCH
ORD213
LIFE EXPECTANCY DATA: ORD213
(%)
99.9
No failure
5 mA 1 mA 100 mA
Load conditions
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Resistive load
Cumulative failure rate
90
70
50
30
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
2
3
Number of operations
Load conditions
Voltage : 12 VDC
Current : 5 mA, 10 mA, 100 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
5 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
No failure
100 mA 10 mA
90
70
50
30
10 7
5 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
Number of operations
(%)
99.9
Cumulative failure rate
Voltage : 24 VDC
Current : 1 mA, 10 mA, 50 mA
Load : Resistive load
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
No failure
50 mA 10 mA 1 mA
90
Load conditions
5 7 10 7
70
50
30
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
Number of operations
2
3
5 7
10 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
55
3
E2R0013-37-21
REED SWITCH
ORD219
ORD219
REED SWITCH
General Purpose Miniature (Medium-level Load 100 V Max.)
GENERAL DESCRIPTION
The ORD219 is a small single-contact reed switch designed for general control of medium-level
loads less than 100 V. The contacts are sealed within the glass tube with inert gas to maintain
contact reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
MAX f2.0
f0.5
MAX 12.0
44.3 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
56
REED SWITCH
ORD219
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
—
Drop-out Value
DO
Contact Resistance
CR
Breakdown Voltage
—
Insulation Resistance
—
—
Electrostatic Capacitance
—
Contact Rating
—
Maximum Switching Voltage
Rated Value
Unit
Min.
Typ.
Max.
10
—
30
—
5
—
—
AT
—
—
—
100
mW
200
—
—
VDC
109
—
—
W
—
—
—
0.3
pF
—
—
—
10
VA
—
—
—
—
100DC
AC
V
Maximum Switching Current
—
—
—
—
0.5
A
Maximum Carry Current
—
—
—
—
1.0
A
(1) Drop-out vs. Pull-in
(2) Contact resistance
(Measurement length; 32 mm)
99.9
99
AT
50
Cumulative frequency percent
95
40
Drop-out
AT
30
20
10
90
80
70
60
50
40
30
20
10
5
1
0.1
0
40
10
20
30
40
50
AT
60
80
100
mW
Contact resistance
Pull-in
57
ORD219
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
99
95
Cumulative frequency percent
Breakdown voltage
DC : V
400
300
200
100
0
10
20
30
40
90
80
70
60
50
40
30
20
10
5
1
50
AT
Pull-in
0.1
10
10
11
10
12
10
13
10
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
58
40
50
AT
14
10
W
REED SWITCH
ORD219
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.4
ms
Bounce Time
—
—
0.3
ms
Release Time
—
—
0.05
ms
5500
5900
6300
Hz
—
—
500
Hz
Resonant Frequency
Maximum Operating Frequency
(1) Operate time
(2) Bounce time
(25Hz : 100AT energized)
99.9
(25Hz : 100AT energized)
99
ms
0.5
Cumulative frequency percent
95
Operate time
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0.1
0.2
0.3
0.4
ms
Bounce time
0
10
20
30
40
50
AT
Pull-in
(3) Release time
(4) Resonant frequency
(25 Hz : 100 AT energized)
99.9
99
95
10
5
0
10
20
30
Drop-out
40
50
AT
Cumulative frequency percent
Release time
ms
15
90
80
70
60
50
40
30
20
10
5
1
0.1
5500
6000
6500
Hz
Resonant frequency
59
ORD219
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
Pull-in and Drop-out
50
40
30
20
PI
DO
10
90
80
70
60
50
40
30
20
10
5
1
0.1
0
2
4
0
Contact resistance
6
Breaking load
mW
80
60
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
30
CR
Rate of change (percent)
20
10
DO
PI
0
–10
–20
–30
–60
–40
–20
0
20
40
60
Temperature
60
80
100
120
140
°C
8
10 kg
REED SWITCH
ORD219
(2) Temperature cycle
(3) Temperature and humidity cycle
–10°C to 65°C
80% to 98%
AT
60
AT
60
50
50
Pull-in and drop-out
Pull-in and drop-out
(–55°C to 125°C)
40
30
PI
20
40
30
20
PI
DO
10
10
0
0
mW
80
mW
80
60
Contact resistance
Contact resistance
DO
CR
40
Before test
60
40
Before test
After test
(4) High temperature storage test
CR
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
Pull-in and Drop-out
Pull-in and drop-out
(125 °C - 500 H)
AT
60
40
30
20
PI
40
30
20
PI
DO
10
10
0
0
mW
80
mW
80
Contace resistance
Contace resistance
DO
60
CR
40
Before test
After test
After test
60
CR
40
Before test
After test
61
ORD219
REED SWITCH
(6) Shock test
(open Æ close)
2) Misoperation
1) Change of characteirstics (30 G - 11 ms)
AT
60
G
1500
40
Acceleration
Pull-in and Drop-out
50
30
20
PI
1000
Misoperation
area
DO
10
500
Contace resistance
0
mW
80
60
0
CR
40
After test
(7) Vibration test
1) Change of characteristics (20 G - 10 to 1000 Hz)
AT
60
Pull-in and drop-out
50
40
30
20
PI
DO
10
0
Contact resistance
20
30
Pull-in
Before test
mW
80
60
CR
40
Before test
62
10
After test
40
50
60
AT
REED SWITCH
ORD219
LIFE EXPECTANCY DATA: ORD219
Load conditions
Cumulative failure rate
(%)
99.9
90
70
50
30
No failure
5mA
1mA
100mA
10
5
1
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Resistive load
0.1
0
2 3
5 7 105
2 3
5 7 106
2 3
Number of operations
5 7 107
2 3
5 7 108
* Arrow indicates number
of operations where
test was completed
Load conditions
Cumulative failure rate
(%)
99.9
Voltage : 12 VDC
Current : 5 mA, 10 mA, 100 mA
Load : Resistive load
No failure
90
70
50
30
100mA
10mA
5mA
10
5
1
0.1
0
2 3
5 7 105
2 3
5 7 106
2 3
Number of operations
5 7 107
2 3
5 7 108
* Arrow indicates number
of operations where
test was completed
Load conditions
Cumulagive failure rate
(%)
99.9
90
70
50
30
200mA
10
5
400mA
100mA
1
Voltage : 24 VDC
Current : 100 mA, 200 mA, 400 mA
Load : Resistive load
0.1
0
2 3
5 7 105
2 3
5 7 106
2 3
5 7 107
2 3
5 7 108
Number of operations
63
E2R0014-37-21
REED SWITCH
ORD221
ORD221
REED SWITCH
General Purpose Miniature Offset (Medium-level Load 100 V Max.)
GENERAL DESCRIPTION
The ORD221 is a small single-contact reed switch designed for general control of medium-level
loads less than 100 V. The contacts are sealed within the glass tube with inert gas to maintain
contact reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
MAX f2.3
0.35 ¥ 0.6
MAX 13.0
44.2 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
64
REED SWITCH
ORD221
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
Drop-out Value
DO
Contact Resistance
CR
Breakdown Voltage
—
Breakdown Voltage
—
Insulation Resistance
—
Electrostatic Capacitance
Contact Rating
Rated Value
Unit
Min.
Typ.
Max.
—
10
—
30
AT
—
5
—
—
AT
—
—
—
100
mW
PI>20
200
—
—
VDC
PI<20
150
—
—
VDC
—
109
—
—
W
—
—
—
—
0.3
pF
—
—
—
—
10
VA
Maximum Switching Voltage
—
—
—
—
100DC
AC
V
Maximum Switching Current
—
—
—
—
0.3
A
Maximum Carry Current
—
—
—
—
1.0
A
(1) Drop-out vs. Pull-in
(2) Contact resistance
(Measurement length; 32 mm)
99.9
AT
50
99
95
Cumulative frequency percent
Drop-out
40
30
20
10
0
10
20
30
Pull-in
40
50
AT
90
80
70
60
50
40
30
20
10
5
1
0.1
40
60
80
100
mW
Contact resistance
65
ORD221
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
AT
Pull-in
90
80
70
60
50
40
30
20
10
5
1
0.1
10 10
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
66
40
50
AT
10 14
W
REED SWITCH
ORD221
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.4
ms
Bounce Time
—
—
0.5
ms
Release Time
Resonant Frequency
—
—
0.05
ms
2500
2750
3000
Hz
—
—
500
Hz
Maximum Operating Frequency
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
(25 Hz : 100 AT energized)
99.9
99
ms
0.5
Cumulative frequency percent
95
Operate time
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
0.1
AT
0.2
0.3
0.4
ms
Bounce time
Pull-in
(3) Release time
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
10
5
0
10
20
30
40
50
AT
Cumulative frequency percent
Release time
15
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
2500
2750
3000
Hz
Resonant frequency
67
ORD221
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
30
PI
20
DO
10
90
80
70
60
50
40
30
20
10
5
1
0.1
0
2
mW
Contact resistance
80
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
DO
10
PI
0
–10
–20
–30
–40
–20
0
20
40
Temperature
68
6
Breaking load
0
60
4
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD221
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55 °C to 125 °C)
30
PI
20
30
PI
20
DO
10
10
0
0
mW
100
80
Contact resistance
Contact resistance
mW
DO
CR
60
Before test
100
80
60
After test
(4) High temperature storage test
CR
Before test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
30
PI
20
30
PI
20
DO
DO
10
10
0
0
mW
100
Contact resistance
Contact resistance
mW
80
After test
CR
60
Before test
After test
100
80
CR
60
Before test
After test
69
ORD221
REED SWITCH
(6) Shock test
(open Æ close)
(30 G - 11 ms)
AT
60
G
1500
40
1000
30
Acceleration
Pull-in and Drop-out
50
PI
20
Misoperation
area
DO
10
500
0
Contact resistance
mW
100
CR
80
0
60
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
30
PI
20
DO
10
0
mW
Contact resistance
20
30
Pull-in
Before test
100
80
CR
60
Before test
70
10
After test
40
50
60
AT
REED SWITCH
ORD221
LIFE EXPECTANCY DATA: ORD221
(%)
99.9
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Resistive load
Cumulative failure rate
Load conditions
No failure
90
70
50
30
5 mA
1 mA
100 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
5 7 10 7
Number of operations
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
(%)
99.9
Voltage : 12 VDC
Current : 5 mA, 10 mA, 100 mA
Load : Resistive load
Cumulative failure rate
Load conditions
No failure
90
70
50
30
100 mA
10 mA 5 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
5 7 10 7
Number of operations
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
Load conditions
Cumulative failure rate
(%)
99.9
Voltage : 24 VDC
Current : 10 mA, 100 mA, 200 mA
Load : Resistive load
90
70
50
30
200 mA
100 mA
No failure
10 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
Number of operations
2
3
5 7 10 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
71
E2R0015-37-22
REED SWITCH
ORD228VL
ORD228VL
REED SWITCH
General Purpose Miniature (Medium-level Load 100 V Max.)
GENERAL DESCRIPTION
The ORD228VL is a small single-contact reed switch designed for general control of mediumlevel loads less than 100 V. The contacts are sealed within the glass tube with inert gas to maintain
contact reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
MAX f2.2
f0.5
MAX 14.0
44.3 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
72
REED SWITCH
ORD228VL
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
—
Drop-out Value
DO
Contact Resistance
CR
Rated Value
Unit
Min.
Typ.
Max.
10
—
45
—
5
—
—
AT
—
—
—
100
mW
AT
Breakdown Voltage
—
PI>20
200
—
—
VDC
Breakdown Voltage
—
PI<20
150
—
—
VDC
Insulation Resistance
—
—
109
—
—
W
Electrostatic Capacitance
—
—
—
—
0.3
pF
Contact Rating
—
—
—
—
10
VA
V
Maximum Switching Voltage
—
—
—
—
100DC
AC
Maximum Switching Current
—
—
—
—
0.5
A
Maximum Carry Current
—
—
—
—
1.0
A
(1) Drop-out vs. Pull-in
(2) Contact resistance
(Measurement length; 32 mm)
99.9
99
AT
50
Cumulative frequency percent
95
Drop-out
40
30
20
10
90
80
70
60
50
40
30
20
10
5
1
0.1
0
40
10
20
30
40
50
AT
60
80
100
mW
Contact resistance
Pull-in
73
ORD228VL
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
AT
Pull-in
90
80
70
60
50
40
30
20
10
5
1
0.1
10 10
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
74
40
50
AT
10 14
W
REED SWITCH
ORD228VL
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.4
ms
Bounce Time
—
—
0.3
ms
Release Time
—
—
0.05
ms
4600
5000
5400
Hz
—
—
500
Hz
Resonant Frequency
Maximum Operating Frequency
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
(25 Hz : 100 AT energized)
99.9
99
ms
0.5
Cumulative frequency percent
95
Operate time
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
0.1
AT
0.2
0.3
0.4
ms
Bounce time
Pull-in
(3) Release time
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
10
5
0
10
20
30
40
50
AT
Cumulative frequency percent
Release time
15
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
4500
5000
5500
Hz
Resonant frequency
75
ORD228VL
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
30
PI
20
DO
10
90
80
70
60
50
40
30
20
10
5
1
0.1
0
2
0
Contact resistance
80
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
DO
10
PI
0
–10
–20
–30
–40
–20
0
20
40
Temperature
76
6
Breaking load
mW
60
4
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD228VL
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
40
30
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
PI
20
DO
PI
20
DO
10
10
0
0
mW
mW
80
60
Contact resistance
Contact resistance
30
CR
40
Before test
80
60
40
After test
(4) High temperature storage test
CR
Before test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
30
PI
20
30
PI
20
DO
DO
10
10
0
0
mW
80
Contact resistance
Contact resistance
mW
60
After test
CR
40
Before test
After test
80
60
CR
40
Before test
After test
77
ORD228VL
REED SWITCH
(6) Shock test
(open Æ close)
2) Misoperation
1) Change of characteristics (30 G - 11 ms)
AT
60
G
1500
40
30
1000
PI
Acceleration
Pull-in and Drop-out
50
20
DO
Misoperation
area
10
500
0
Contact resistance
mW
80
60
CR
0
40
After test
(7) Vibration test
1) Change of characteristics (20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
30
PI
20
DO
10
0
mW
Contact resistance
20
30
Pull-in
Before test
80
60
CR
40
Before test
78
10
After test
40
50
60
AT
REED SWITCH
ORD228VL
LIFE EXPECTANCY DATA: ORD228VL
(%)
99.9
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Resistive load
Cumulative failure rate
Load conditions
No failure
90
70
50
30
5 mA
1 mA
100 mA
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
2
3
Number of operations
5 7
10 7
2
3
5 7
10 8
* Arrow indicates number
of operations where
test was completed
(%)
99.9
Voltage : 12 VDC
Current : 5 mA, 10 mA, 100 mA
Load : Resistive load
Cumulative failure rate
Load conditions
No failure
90
70
50
30
100 mA
10 mA 5 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
Number of operations
5 7 10 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
Load conditions
Cumulative failure rate
(%)
99.9
Voltage : 24 VDC
Current : 100 mA, 200 mA, 400 mA
Load : Resistive load
90
70
50
30
200 mA
400 mA
10
5
100 mA
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
5 7 10 7
2
3
5 7 10 8
Number of operations
79
E2R0017-37-21
REED SWITCH
ORD2211
ORD2211
REED SWITCH
Lamp Load (12 V – 3.4 W Lamp Switching)
GENERAL DESCRIPTION
The ORD2211 is a single-contact reed switch designed for direct opening or closing lamps of 12
V - 3.4 W. The contacts are sealed within the glass tube with inert gas to maintain contact
reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
f0.6
MAX f2.8
MAX 16.5
44.1 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
80
REED SWITCH
ORD2211
ELECTRICAL CHARACTERISTICS
Parameter
Symbol Condition
Rated Value
Min.
Typ.
Max.
20
—
60
Unit
Pull-in Value
PI
—
Drop-out Value
DO
—
8
—
—
AT
Contact Resistance
CR
—
—
—
100
mW
Breakdown Voltage
—
—
—
VDC
—
PI≥20
—
200
Insulation Resistance
109
—
—
W
Electrostatic Capacitance
—
—
—
—
0.3
pF
Contact Rating
—
—
—
—
Maximum Switching Voltage
—
—
—
—
Maximum Switching Current
—
—
—
—
Maximum Carry Current
—
—
—
—
(1) Drop-out vs. Pull-in
AT
50
VA
(12 V-3.4 W Lamp)
100
DC
AC
V
0.5
A
(Inrush Current 3 A)
A
2.5
(2) Contact resistance
(Measurement length; 32 mm)
99.9
AT
50
99
95
Cumulative frequency percent
Drop-out
40
30
20
10
0
10
20
30
Pull-in
40
50
60
90
80
70
60
50
40
30
20
10
5
1
0.1
AT
40
60
80
100
mW
Contact resistance
81
ORD2211
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
Pull-in
60
90
80
70
60
50
40
30
20
10
5
1
AT
0.1
10 10
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
82
40
50
60
AT
10 14
W
REED SWITCH
ORD2211
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.6
ms
Bounce Time
—
—
0.4
ms
Release Time
Resonant Frequency
Maximum Operating Frequency
—
—
0.05
ms
4100
4600
5100
Hz
—
—
500
Hz
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
(25 Hz : 100 AT energized)
99.9
ms
0.5
99
Cumulative frequency percent
95
Operate time
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
10
20
30
40
50
60
Pull-in
0
0.1
(3) Release time
0.2
0.3
0.4
ms
Bounce time
AT
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
10
5
0
10
20
30
40
50
AT
Cumulative frequency percent
Release time
15
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
4100
4600
5100
Hz
Resonant frequency
83
ORD2211
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
40
Cumulative frequency percent
Pull-in and Drop-out
50
PI
30
DO
20
90
80
70
60
50
40
30
20
10
5
1
0.1
10
0
2
4
6
Breaking load
0
Contact resistance
mW
80
60
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
DO
10
PI
0
–10
–20
–30
–40
–20
0
20
40
Temperature
84
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD2211
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
PI
30
20
DO
20
10
10
0
0
mW
DO
mW
80
Contact resistance
Contact resistance
PI
30
60
CR
40
Before test
80
60
CR
40
After test
(4) High temperature storage test
Before test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
PI
30
20
DO
PI
30
20
10
10
0
0
DO
mW
mW
80
Contact resistance
Contact resistance
After test
60
CR
40
Before test
After test
80
60
CR
40
Before test
After test
85
ORD2211
REED SWITCH
(6) Shock test
(open Æ close)
(30 G - 11 ms)
AT
60
G
1500
40
PI
1000
30
20
Acceleration
Pull-in and Drop-out
50
DO
10
Misoperation
area
500
0
Contact resistance
mW
80
0
60
40
Before test
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
PI
30
DO
10
0
Contact resistance
mW
80
60
CR
40
Before test
86
20
30
Pull-in
CR
20
10
After test
40
50
60
AT
REED SWITCH
ORD2211
LIFE EXPECTANCY DATA: ORD2211
(%)
99.9
Cumulative failure rate
90
Load conditions
Voltage : 13, 14, 16 : VDC
Load : 12 V–3.4 W Lamp
70
50
30
16 V
14 V
13 V
10
5
1
0.1
0
2
3
5 7
10 4
2
3
5 7
10 5
2
3
5 7
10 6
2
3
5 7
10 7
Number of operations
(%)
99.9
Cumulative failure rate
Load conditions
No failure
90
70
50
30
10
5
Voltage : 50 VDC
Current : 1 A
Load : Resistive load
1
0.1
0
2
3
5 7
10 4
2
3
5 7
10 5
2
3
5 7
Number of operations
10
6
2
3
5 7
10 7
* Arrow indicates number
of operations where
test was completed
Load conditions
Voltage : 6 VDC
Current : 10 mA, 50 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
No failure
50 mA
10 mA
10
5
1
0.1
0
2
3
5 7 10 6
2
3
5 7 10 7
Number of operations
2
3
5 7 10 8
2
3
5 7 10 9
* Arrow indicates number
of operations where
test was completed
87
E2R0018-37-22
REED SWITCH
ORD2212
ORD2212
REED SWITCH
Closed Diffrential, Low Operating Noise
GENERAL DESCRIPTION
The ORD2212 is a single-contact reed switch designed for the purpose of low operating noise and
closed differential motion. The cotacts are sealed within the glass tube with inert gas to maintain
contact reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
MAX f2.8
0.35 ¥ 0.6
MAX 16.5
43.9 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
88
REED SWITCH
ORD2212
ELECTRICAL CHARACTERISTICS
Parameter
Symbol Condition
PI
Pull-in Value
Rated Value
Min.
Typ.
Max.
15
—
35
—
Unit
AT
DO
PI>20
—
DO/PI≥0.8
—
—
DO
PI<20
—
DO/PI≥0.7
—
—
Contact Resistance
CR
—
—
—
100
mW
Breakdown Voltage
—
—
150
—
—
VDC
Insulation Resistance
—
—
109
—
—
W
Electrostatic Capacitance
—
—
—
—
0.5
pF
Contact Rating
—
—
—
—
10
Maximum Switching Voltage
—
—
—
—
100
Maximum Switching Current
—
—
—
—
0.2
A
Maximum Carry Current
—
—
—
—
0.5
A
Drop-out Value
(1) Drop-out vs. Pull-in
VA
DC
AC
V
(2) Contact resistance
(Measurement length; 32 mm)
99.9
AT
50
99
95
Cumulative frequency percent
Drop-out
40
30
20
10
0
10
20
30
Pull-in
40
50
90
80
70
60
50
40
30
20
10
5
1
0.1
AT
40
60
80
100
mW
Contact resistance
89
ORD2212
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
99
95
Cumulative frequency percent
Breakdown voltage
DC : V
400
300
200
100
0
10
20
30
40
50
90
80
70
60
50
40
30
20
10
5
1
AT
Pull-in
0.1
10 10
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
90
40
50
AT
10 14
W
REED SWITCH
ORD2212
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.4
ms
Bounce Time
—
—
1.0
ms
Release Time
Resonant Frequency
Maximum Operating Frequency
—
—
0.05
ms
3400
3900
4400
Hz
—
—
500
Hz
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
99
ms
0.5
Cumulative frequency percent
95
0.4
Operate time
(25 Hz : 100 AT energized)
99.9
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
0.2
0.4
AT
0.6
0.8
ms
Bounce time
Pull-in
(3) Release time
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
10
5
0
10
20
30
Drop-out
40
50
AT
Cumulative frequency percent
Release time
15
90
80
70
60
50
40
30
20
10
5
1
0.1
3400
3900
4400
Hz
Resonant frequency
91
ORD2212
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
30
PI
DO
20
90
80
70
60
50
40
30
20
10
5
1
0.1
10
0
2
4
6
Breaking load
0
mW
Contact resistance
80
CR
60
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
DO
10
PI
0
–10
–20
–30
–40
–20
0
20
40
Temperature
92
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD2212
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
40
30
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
PI
DO
20
PI
DO
20
10
10
0
0
mW
mW
80
Contact resistance
Contact resistance
30
CR
60
40
Before test
80
CR
60
40
After test
(4) High temperature storage test
Before test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
30
PI
DO
20
30
PI
DO
20
10
10
0
0
mW
mW
80
Contact resistance
Contact resistance
After test
CR
60
40
Before test
After test
80
CR
60
40
Before test
After test
93
ORD2212
REED SWITCH
(6) Shock test
(open Æ close)
(30 G - 11 ms)
AT
60
G
1500
40
30
1000
Acceleration
Pull-in and Drop-out
50
PI
DO
20
10
500
Misoperation
area
0
Contact resistance
mW
80
CR
0
60
40
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
30
PI
DO
20
10
0
mW
Contact resistance
20
30
Pull-in
Before test
80
CR
60
40
Before test
94
10
After test
40
50
60
AT
REED SWITCH
ORD2212
LIFE EXPECTANCY DATA: ORD2212
Load conditions
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
No failure
5 mA
1 mA
100 mA
10
5
1
0.1
0
2
3
5 7 10 6
2
3
5 7 10 7
2
3
Number of operations
5 7 10 8
2
3
5 7 10 9
* Arrow indicates number
of operations where
test was completed
Load conditions
Voltage : 6 VDC
Current : 10 mA, 20 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
No failure
20 mA
10 mA
10
5
1
0.1
0
2
3
5 7 10 6
2
3
5 7 10 7
2
3
Number of operations
5 7 10
8
2
3
5 7 10 9
* Arrow indicates number
of operations where
test was completed
Load conditions
Voltage : 15 VDC
Current : 5 mA, 10 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
10 mA
5 mA
10
5
1
0.1
0
2
3
5 7 10 6
2
3
5 7 10 7
2
3
5 7 10 8
2
3
5 7 10 9
Number of operations
95
E2R0019-37-22
REED SWITCH
ORD229
ORD229
REED SWITCH
High Breakdown Voltage, High Power (AC 200 V Switching)
GENERAL DESCRIPTION
The ORD229 is a single-contact reed switch designed for high breakdown voltage of 600 VDC
and high power of AC 70 VA and DC 50 W. The contacts are sealed within the glass tube with
inert gas to maintain contact reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
f0.6
MAX f2.75
MAX 21.0
55.4 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
96
REED SWITCH
ORD229
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
—
Drop-out Value
DO
Contact Resistance
CR
Rated Value
Unit
Min.
Typ.
Max.
20
—
50
—
6
—
—
AT
—
—
—
100
mW
AT
Breakdown Voltage
—
PI>35
600
—
—
VDC
Breakdown Voltage
—
PI 20 to 35
500
—
—
VDC
Insulation Resistance
—
—
1010
—
—
W
Electrostatic Capacitance
—
—
—
—
0.5
pF
Contact Rating
—
—
—
—
50
W
Contact Rating
—
—
—
—
70
VA
Maximum Switching Voltage
—
—
—
—
300 AC
V
Maximum Switching Voltage
—
—
—
—
350 DC
V
Maximum Switching Current
—
—
—
—
DC0.7/AC0.5
A
Maximum Carry Current
—
—
—
—
2.5
A
(1) Drop-out vs. Pull-in
(2) Contact resistance
(Measurement length; 32 mm)
99.9
AT
50
99
95
Cumulative frequency percent
Drop-out
40
30
20
10
0
90
80
70
60
50
40
30
20
10
5
1
0.1
10
20
30
Pull-in
40
50
60
AT
40
60
80
100
mW
Contact resistance
97
ORD229
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
800
99
Cumulative frequency percent
Breakdown voltage
95
600
400
200
0
10
20
30
40
50
60
Pull-in
90
80
70
60
50
40
30
20
10
5
1
AT
0.1
10 10
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
98
40
50
60
AT
10 14
W
REED SWITCH
ORD229
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.6
ms
Bounce Time
—
—
0.5
ms
Release Time
Resonant Frequency
—
—
0.05
ms
2250
2500
2750
Hz
—
—
500
Hz
Maximum Operating Frequency
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
(25 Hz : 100 AT energized)
99.9
99
ms
0.5
Cumulative frequency percent
95
Operate time
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
60
Pull-in
(3) Release time
0.3
0.4
ms
(4) Resonant frequency
(25 Hz : 100 AT energized)
99.9
ms
99
15
95
10
5
10
20
30
Drop-out
40
50
AT
Cumulative frequency percent
Release time
0.2
Bounce time
(25 Hz : 100 AT energized)
0
0.1
AT
90
80
70
60
50
40
30
20
10
5
1
0.1
2250
2500
2750
Hz
Resonant frequency
99
ORD229
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Pull-in and Drop-out
40
Cumulative frequency percent
50
PI
30
DO
20
90
80
70
60
50
40
30
20
10
5
1
0.1
10
0
2
4
6
Breaking load
0
mW
Contact resistance
80
60
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
DO
10
PI
0
–10
–20
–30
–40
–20
0
20
40
Temperature
100
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD229
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
PI
30
DO
20
40
30
DO
20
10
10
0
0
mW
mW
80
Contact resistance
Contact resistance
PI
60
CR
40
Before test
80
60
CR
40
Before test
After test
(4) High temperature storage test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
40
PI
30
20
DO
40
PI
30
DO
20
10
10
0
0
mW
mW
Contact resistance
Contact resistance
After test
80
60
CR
40
Before test
After test
80
60
CR
40
Before test
After test
101
ORD229
REED SWITCH
(6) Shock test
(open Æ close)
(30 G - 11 ms)
AT
60
G
1500
40
PI
1000
30
Acceleration
Pull-in and Drop-out
50
DO
20
Misoperation
area
10
500
0
Contact resistance
mW
80
0
60
CR
Before test
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
PI
30
DO
20
10
0
Contact resistance
mW
80
60
CR
40
Before test
102
20
30
Pull-in
40
40
10
After test
40
50
60
AT
REED SWITCH
ORD229
LIFE EXPECTANCY DATA: ORD229
Load conditions
Voltage : 200 VAC
Current : 200 mA, 250 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
No failure
250 mA
200 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
5 7 10 7
3
Number of operations
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
Load conditions
Voltage : 350 VDC, 270 VDC
Current : 1 mA, 270 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
No failure
350 V 270 V
1 mA
270 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
Number of operations
5 7 10 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
Load conditions
Voltage : 100 VDC, 50 VDC
Current : 0.5 A, 1.0 A, 0.5 A
Load : Resistive load
Cumulative failure rate
(%)
99.9
50 V
1A
90
70
50
30
100 V
0.5 A
No failure
50 V - 05 A
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
Number of operations
2
3
5 7 10 7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
103
E2R0020-37-21
REED SWITCH
ORD2210
ORD2210
REED SWITCH
High Power
GENERAL DESCRIPTION
The ORD2210 is a single-contact reed switch designed for high current of 1.0 A DC and 0.7 A AC
and high power of AC 70 VA and DC 50 W. The contacts are sealed within the glass tube with
inert gas to maintain contact reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
f0.6
MAX f2.75
MAX 21.0
55.4 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic device
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Householde appliances
104
REED SWITCH
ORD2210
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
—
Drop-out Value
DO
Contact Resistance
CR
Breakdown Voltage
Breakdown Voltage
Rated Value
Unit
Min.
Typ.
Max.
15
—
60
—
7
—
—
AT
—
—
—
100
mW
—
PI>20
250
—
—
VDC
—
PI<20
200
—
—
VDC
AT
Insulation Resistance
—
—
1010
—
—
W
Electrostatic Capacitance
—
—
—
—
0.5
pF
Contact Rating
—
—
—
—
50
W
Contact Rating
—
—
—
—
70
VA
Maximum Switching Voltage
—
—
—
—
200 DC
V
Maximum Switching Voltage
—
—
—
—
150 AC
V
Maximum Switching Current
—
—
—
—
1.0 DC
A
Maximum Switching Current
—
—
—
—
0.7 AC
A
Maximum Carry Current
—
—
—
—
2.5
A
(2) Contact resistance
(1) Drop-out vs. Pull-in
(Measurement length; 32 mm)
99.9
AT
50
99
95
Cumulative frequency percent
Drop-out
40
30
20
10
90
80
70
60
50
40
30
20
10
5
1
0.1
0
10
20
30
Pull-in
40
50
60
40
AT
60
80
100
mW
Contact resistance
105
ORD2210
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
Pull-in
60
90
80
70
60
50
40
30
20
10
5
1
AT
0.1
10 10
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
106
40
50
60
AT
10 14
W
REED SWITCH
ORD2210
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.6
ms
Bounce Time
—
—
0.5
ms
Release Time
Resonant Frequency
—
—
0.05
ms
2250
2500
2750
Hz
—
—
500
Hz
Maximum Operating Frequency
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
(25 Hz : 100 AT energized)
99.9
99
ms
0.5
Cumulative frequency percent
95
Operate time
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
60
Pull-in
0.1
(3) Release time
0.2
0.3
0.4
ms
Bounce time
AT
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
10
5
0
10
20
30
40
50
AT
Cumulative frequency percent
Release time
15
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
2250
2500
2750
Hz
Resonant frequency
107
ORD2210
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
PI
30
20
DO
90
80
70
60
50
40
30
20
10
5
1
0.1
10
0
2
4
6
Breaking load
0
mW
Contact resistance
80
60
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
DO
10
PI
0
–10
–20
–30
–40
–20
0
20
40
Temperature
108
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD2210
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
PI
30
20
40
PI
30
20
DO
DO
10
10
0
0
mW
80
Contact resistance
Contact resistance
mW
60
CR
40
Before test
80
60
CR
40
Before test
After test
(4) High temperature storage test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
40
PI
30
20
40
PI
30
20
DO
DO
10
10
0
0
mW
mW
80
Contact resistance
Contact resistance
After test
60
CR
40
Before test
After test
80
60
CR
40
Before test
After test
109
ORD2210
REED SWITCH
(6) Shock test
(open Æ close)
(30 G - 11 ms)
AT
60
G
1500
40
PI
1000
30
Acceleration
Pull-in and Drop-out
50
20
DO
10
Misoperation
area
500
0
Contact resistance
mW
80
0
60
40
Before test
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
PI
30
20
DO
10
0
Contact resistance
mW
110
20
30
Pull-in
CR
80
60
CR
40
Before test
10
After test
40
50
60
AT
REED SWITCH
ORD2210
LIFE EXPECTANCY DATA: ORD2210
(%)
99.9
Load conditions
Voltage : 100 VAC
Current : 0.7 A, 0.5 A
Load : Resistive load
Cumulative failure rate
90
70
50
30
0.7 A
0.5 A
10
5
1
0.1
0
2
3
5 7
10 5
2
3
10 6
5 7
2
3
5 7
10 7
2
3
5 7
10 8
Number of operations
Load conditions
Voltage : 100 VDC, 50 VDC
Current : 0.5 A, 1.0 A, 0.5 A
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
100 A
0.5 A
50 V
1A
No failure
50 V - 0.5 A
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
Number of operations
5 7 10
7
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
Load conditions
Voltage : 15 VDC
Current : 3 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
No failure
90
70
50
30
10
5
1
0.1
0
2
3
5 7
10 6
2
3
5 7
10 7
Number of operations
2
3
5 7
10 8
2
3
5 7
10 9
* Arrow indicates number
of operations where
test was completed
111
E2R0021-37-21
REED SWITCH
ORD2210V
ORD2210V
REED SWITCH
Vacuum Ultra High Breakdown Voltage High Power Reed Switch
GENERAL DESCRIPTION
The ORD2210V is a small single-contact reed swtich of a vacuum type designed for ultra high
breakdown voltages 1000 V DC between the reed contacts.
Features
(1) The reed contacts are hermetically sealed within a galss tube and do not receive any influence
from the external atomospheric environment.
(2) Quick response
(3) The operating system and electrical circuits are coaxially composed and the ORD2210V is
suited to the applications for high frequency transmission.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
MAX f2.75
f0.6
MAX 21.0
55.4 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
112
REED SWITCH
ORD2210V
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
Drop-out Value
Rated Value
Unit
Min.
Typ.
Max.
—
20
—
60
AT
DO
—
7
—
—
AT
Contact Resistance
CR
—
—
—
100
mW
Breakdown Voltage
—
—
1000
—
—
VDC
Insulation Resistance
—
—
1010
—
—
W
Electrostatic Capacitance
—
—
—
—
0.5
pF
Contact Rating
—
—
—
—
100
VA
Maximum Switching Voltage
—
—
—
—
350 DC
V
Maximum Switching Voltage
—
—
—
—
300 AC
V
Maximum Switching Current
—
—
—
—
1.0
A
Maximum Carry Current
—
—
—
—
2.5
A
(1) Drop-out vs. Pull-in
(2) Contact resistance
(Measurement length; 32 mm)
99.9
99
AT
50
Cumulative frequency percent
95
Drop-out
40
30
20
10
90
80
70
60
50
40
30
20
10
5
1
0.1
0
40
10
20
30
Pull-in
40
50
60
AT
60
80
100
mW
Contact resistance
113
ORD2210V
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : kV
5
99
Cumulative frequency percent
Breakdown voltage
95
4
3
2
0
10
20
30
40
50
60
Pull-in
90
80
70
60
50
40
30
20
10
5
1
AT
0.1
10 10
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
114
40
50
60
AT
10 14
W
REED SWITCH
ORD2210V
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.6
ms
Bounce Time
—
—
0.5
ms
Release Time
Resonant Frequency
Maximum Operating Frequency
—
—
0.05
ms
2250
2500
2750
Hz
—
—
500
Hz
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
(25 Hz : 100 AT energized)
99.9
99
ms
0.5
Cumulative frequency percent
95
Operate time
0.4
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
60
Pull-in
0.1
(3) Release time
0.2
0.3
0.4
ms
Bounce time
AT
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
10
5
0
10
20
30
40
50
AT
Cumulative frequency percent
Release time
15
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
2250
2500
2750
Hz
Resonant frequency
115
ORD2210V
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
PI
30
20
DO
90
80
70
60
50
40
30
20
10
5
1
0.1
10
0
2
4
6
Breaking load
0
mW
Contact resistance
80
60
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
DO
10
PI
0
–10
–20
–30
–40
–20
0
20
40
Temperature
116
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD2210V
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
PI
30
20
DO
PI
30
20
DO
10
10
0
0
mW
mW
80
Contact resistance
Contact resistance
40
60
CR
40
Before test
80
60
CR
40
After test
(4) High temperature storage test
Before test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
40
PI
30
20
40
PI
30
20
DO
DO
10
10
0
0
mW
mW
80
Contact resistance
Contact resistance
After test
60
CR
40
Before test
After test
80
60
CR
40
Before test
After test
117
ORD2210V
REED SWITCH
(6) Shock test
(open Æ close)
(30 G - 11 ms)
AT
60
G
1500
40
PI
1000
30
Acceleration
Pull-in and Drop-out
50
20
DO
10
Misoperation
area
500
0
Contact resistance
mW
80
0
60
40
Before test
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
PI
30
20
DO
10
0
Contact resistance
mW
118
20
30
Pull-in
CR
80
60
CR
40
Before test
10
After test
40
50
60
AT
REED SWITCH
ORD2210V
LIFE EXPECTANCY DATA: ORD2210V
(%)
99.9
Load conditions
Cumulative failure rate
No failure
Voltage : 200 VDC
Current : 1 mA
Load : Resistive load
90
70
50
30
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
2
3
5 7
10 7
2
3
5 7
10 8
2
3
5 7
10 7
2
3
5 7
10 8
2
3
5 7 10 7
2
3
5 7 10 8
Number of operations
(%)
99.9
Load conditions
Cumulative failure rate
90
Voltage : 500 VDC
Current : 1 mA
Load : Resistive load
70
50
30
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
Number of operations
Load conditions
Voltage : 1 kVDC
Current : 1 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
Number of operations
119
E2R0022-37-22
REED SWITCH
ORD234
ORD234
REED SWITCH
Long Life (More than 100 million operations)
GENERAL DESCRIPTION
The ORD234 is a single-contact reed swtich designed for long life for increased number of
operations. The contacts are sealed within the glass tube with inert gas to maintain contact
reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
MAX f3.5
0.4 ¥ 0.65
MAX 21.0
43.4 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
120
REED SWITCH
ORD234
ELECTRICAL CHARACTERISTICS
Symbol
Condition
Pull-in Value
PI
Drop-out Value
DO
Contact Resistance
CR
Breakdown Voltage
—
Breakdown Voltage
—
Insulation Resistance
—
Parameter
Rated Value
Unit
Min.
Typ.
Max.
—
15
—
50
AT
—
6
—
—
AT
—
—
—
100
mW
PI>20
250
—
—
VDC
PI<20
200
—
—
VDC
—
1010
—
—
W
Electrostatic Capacitance
—
—
—
—
0.5
pF
Contact Rating
—
—
—
—
10
VA
Maximum Switching Voltage
—
—
—
—
200 DC
V
Maximum Switching Voltage
—
—
—
—
100 AC
V
Maximum Switching Current
—
—
—
—
0.5
A
Maximum Carry Current
—
—
—
—
2.0
A
(1) Drop-out vs. Pull-in
(2) Contact resistance
(Measurement length; 32 mm)
99.9
AT
50
99
95
Cumulative frequency percent
Drop-out
40
30
20
10
0
10
20
30
Pull-in
40
50
60
90
80
70
60
50
40
30
20
10
5
1
0.1
AT
40
60
80
100
mW
Contact resistance
121
ORD234
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
60
Pull-in
90
80
70
60
50
40
30
20
10
5
1
AT
0.1
10 10
10 11
10 12
10 13
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
pF
Electrostatic capacitance
0.4
0.3
0.2
0.1
0
10
20
30
Pull-in
122
40
50
60
AT
10 14
W
REED SWITCH
ORD234
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Max.
Operate Time
—
—
0.5
ms
Bounce Time
—
—
0.5
ms
Release Time
Resonant Frequency
Maximum Operating Frequency
—
—
0.05
ms
1900
2200
2500
Hz
—
—
500
Hz
(1) Operate time
(2) Bounce time
(25 Hz : 100 AT energized)
99
ms
0.5
Cumulative frequency percent
95
0.4
Operate time
(25 Hz : 100 AT energized)
99.9
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
60
Pull-in
0.1
(3) Release time
0.2
0.3
0.4
ms
Bounce time
AT
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
10
5
0
10
20
30
40
50
AT
Cumulative frequency percent
Release time
15
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
1900
2200
2500
Hz
Resonant frequency
123
ORD234
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
PI
30
20
DO
10
90
80
70
60
50
40
30
20
10
5
1
0.1
2
mW
Contact resistance
80
60
CR
40
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
30
Rate of change (percent)
6
Breaking load
0
20
DO
10
PI
0
–10
–20
–30
–40
–20
0
20
40
Temperature
124
4
60
80
100
120
°C
8
10 kg
REED SWITCH
ORD234
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
PI
30
20
40
PI
30
20
DO
DO
10
10
0
0
mW
80
60
Contact resistance
Contact resistance
mW
CR
40
Before test
80
60
CR
40
After test
(4) High temperature storage test
Before test
(5) Low temperature storage test
(–40 °C - 500 H)
AT
60
50
50
Pull-in and Drop-out
Pull-in and Drop-out
(125 °C - 500 H)
AT
60
40
PI
30
20
40
PI
30
20
DO
DO
10
10
0
0
mW
80
Contact resistance
Contact resistance
mW
60
After test
CR
40
Before test
After test
80
60
CR
40
Before test
After test
125
ORD234
REED SWITCH
(6) Shock test
(open Æ close)
(30 G - 11 ms)
AT
60
G
1500
40
PI
30
1000
Acceleration
Pull-in and Drop-out
50
20
DO
Misoperation
area
10
500
0
Contact resistance
mW
80
60
0
CR
40
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
PI
30
20
DO
10
0
mW
Contact resistance
20
30
Pull-in
Before test
80
60
CR
40
Before test
126
10
After test
40
50
60
AT
REED SWITCH
ORD234
LIFE EXPECTANCY DATA: ORD234
(%)
99.9
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Rsistive load
Cumulative failure rate
Load conditions
90
70
50
30
No failure
5 mA
1 mA
100 mA
10
5
1
0.1
0
2
3
5 7 10 6
2
3
5 7 10 7
2
3
Number of operations
5 7 10 8
2
3
5 7 10 9
* Arrow indicates number
of operations where
test was completed
(%)
99.9
Cumulative failure rate
Load conditions
90
70
50
30
No failure
7 VDC
6 VDC
2.2 mA
10 mA 20 mA
10
5
Voltage : 6 VDC, 7 VDC
Current : 10 mA, 20 mA, 2.2 mA
Load : Resistive load
1
0.1
0
2
3
5 7 10 6
2
3
5 7 10 7
2
3
Number of operations
5 7 10 8
2
3
5 7 10 9
* Arrow indicates number
of operations where
test was completed
Load conditions
Cumulative failure rate
(%)
99.9
Voltage : 12 VDC, 24 VDC, 48 VDC
Current : 10 mA, 250 mA, 400 mA
Load : Resistive load
48 VDC
90
70
50
30
No failure
24 VDC
400 mA
12 VDC
250 mA
10 mA
10
5
1
0.1
0
2
3
5 7 10 6
2
3
5 7 10 7
Number of operations
2
3
5 7 10 8
2
3
5 7 10 9
* Arrow indicates number
of operations where
test was completed
127
E2R0024-37-22
REED SWITCH
ORT551
ORT551
REED SWITCH
Ultraminiature Transfer Type
GENERAL DESCRIPTION
The ORT551 is a ultraminiature two-contact reed switch designed for transfer type operation.
The contacts are sealed within the glass tube with inert gas to maintain contact reliability.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
f0.5
MAX f2.54
N.C
f0.5
N.O
MAX 14.0
51.6 ±0.3
56.1 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
128
f0.5
REED SWITCH
ORT551
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
—
Drop-out Value
DO
Contact Resistance
CR
Rated Value
Unit
Min.
Typ.
Max.
10
—
25
—
4
—
—
AT
—
—
—
100
mW
AT
Breakdown Voltage
—
PI>20
200
—
—
VDC
Breakdown Voltage
—
PI<20
150
—
—
VDC
Insulation Resistance
—
—
109
—
—
W
Electrostatic Capacitance
—
—
—
—
1.5
pF
Contact Rating
—
—
—
—
3
VA
Maximum Switching Voltage
—
—
—
—
30 DC
AC
V
Maximum Switching Current
—
—
—
—
0.2
A
Maximum Carry Current
—
—
—
—
0.5
A
(1) Drop-out vs. Pull-in
(2) Contact resistance
(Measurement length: 30 mm)
99.9
AT
50
99
N.O
N.C
95
Cumulative frequency percent
Drop-out
40
30
20
10
0
90
80
70
60
50
40
30
20
10
5
1
0.1
10
20
30
Pull-in
40
50
AT
40
60
80
100
mW
Contact resistance
129
ORT551
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
90
80
70
60
50
40
30
20
10
5
1
AT
0.1
Pull-in
10 9
10 10
10 11
10 12
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
Electrostatic capacitance
pF
1.5
1.0
0.5
0
10
20
30
Pull-in
130
40
50
AT
10 13
W
REED SWITCH
ORT551
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Operate Time
—
—
1.0
ms
Bounce Time
—
—
N.O 1.0
ms
Bounce Time
—
—
N.C 1.5
ms
Release Time
—
—
0.5
ms
2000
6000
10000
Hz
—
—
200
Hz
Resonant Frequency
Maximum Operating Frequency
(1) Operate time
Max.
(2) Bounce time
(25 Hz : 100 AT energized)
99.9
(25 Hz : 100 AT energized)
99
ms
0.5
Cumulative frequency percent
0.4
Operate time
N.O
N.C
95
0.3
0.2
0.1
90
80
70
60
50
40
30
20
10
5
1
0.1
0
0
10
20
30
40
50
0.5
1.0
1.5
ms
Bounce time
AT
Pull-in
(3) Release time
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
20
10
0
5
10
15
20
25
AT
Cumulative frequency percent
Release time
30
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
2000
4000
6000
Hz
Resonant frequency
131
ORT551
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
30
20
PI
80
70
60
50
40
30
20
10
5
1
0.1
DO
10
90
2
4
6
Breaking load
0
mW
Contact resistance
80
60
CR
CR
40
N.O N.C
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
PI
10
DO
0
–10
–20
–30
–40
–20
0
20
40
Temperature
132
60
80
100
120
°C
8
10 kg
REED SWITCH
ORT551
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
30
20
PI
DO
10
30
20
DO
10
0
0
mW
mW
80
60
Contact resistance
Contact resistance
PI
CR
CR
40
N.O N.C
Before test
80
60
CR
CR
40
N.O N.C
After test
(4) High temperature storage test
Before test
(5) Low temperature storage test
(–40°C-500 H)
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(125°C-500 H)
AT
60
30
20
PI
DO
10
30
20
PI
10
0
DO
0
mW
mW
80
60
Contact resistance
Contact resistance
After test
CR
CR
40
N.O N.C
Before test
80
60
CR
CR
40
N.O N.C
After test
Before test
After test
133
ORT551
REED SWITCH
(6) Shock test
(NC : close Æ open)
(30 G - 11 ms)
AT
60
G
1500
40
30
20
1000
Acceleration
Pull-in and Drop-out
50
PI
10
DO
500
Misoperation
area
0
Contact resistance
mW
80
60
0
CR
CR
N.O N.C
Before test
After test
(7) Vibration test
(20 G - 10 to 1000 Hz)
AT
60
Pull-in and Drop-out
50
40
30
PI
DO
10
0
Contact resistance
mW
80
60
CR
40
CR
N.O N.C
Before test
134
20
30
Pull-in
40
20
10
After test
40
50
60
AT
REED SWITCH
ORT551
LIFE EXPECTANCY DATA: ORT551
Cumulative failure rate
(%)
99.9
Load conditions
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Resistive load
90
70
50
30
No failure
5 mA
1 mA 100 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
3
Number of operations
5 7 10 7
2
5 7 10 8
3
* Arrow indicates number
of operations where
test was completed
Load conditions
Cumulative failure rate
(%)
99.9
Voltage : 12 VDC
Current : 5 mA, 10 mA, 100 mA
Load : Resistive load
90
70
50
30
100 mA
10 mA
5 mA
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
2
3
5 7
10 7
2
3
5 7
10 8
Number of operations
Load conditions
Voltage : 24 VDC
Current : 50 mA, 100 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
100 mA
50 mA
10
5
1
0.1
0
2
3
5 7 10 4
2
3
5 7 10 5
2
3
5 7 10 6
2
3
5 7 10 7
Number of operations
135
E2R0025-37-21
REED SWITCH
ORT233
ORT233
REED SWITCH
Miniature Transfer Type
GENERAL DESCRIPTION
The ORT233 is a miniature two-contact reed switch designed for transfer type operation. The
contacts are sealed within the glass tube with inert gas to maintain contact realiabilty.
Features
(1) Reed contacts are hermetically sealed within a glass tube with inert gas and do not receive any
influence from the external atmospheric environment.
(2) Quick response
(3) The structure comprises an operating system and electrical circuits coaxially. Reed switches
are suited to applications in radio frequency.
(4) Reed switches are compact and light weight.
(5) Superior corrosion resistance and wear resistance of the contacts assures stable switching
operation and long life.
(6) With a permanent magnet installed, reed switches economically and easily become proximity
switches.
External Dimensions (Unit:mm)
MAX f3.3
f0.5
N.C
f0.55
N.O
MAX 16.0
51.6 ±0.3
56.1 ±0.3
APPLICATIONS OF REED SWITCHES
1. Automotive electronic devices
2. Control equipment
3. Communication equipment
4. Measurement equipment
5. Household appliances
136
f0.55
REED SWITCH
ORT233
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Condition
Pull-in Value
PI
—
Drop-out Value
DO
Contact Resistance
CR
Breakdown Voltage
Insulation Resistance
Rated Value
Unit
Min.
Typ.
Max.
15
—
30
—
5
—
—
AT
—
—
—
100
mW
—
—
150
—
—
VDC
—
—
109
—
—
W
Electrostatic Capacitance
—
—
—
—
1.5
pF
Contact Rating
—
—
—
—
3
VA
Maximum Switching Voltage
—
—
—
—
30 DC
AC
V
Maximum Switching Current
—
—
—
—
0.2
A
Maximum Carry Current
—
—
—
—
0.5
A
(1) Drop-out vs. Pull-in
(2) Contact resistance
(Measurement length: 32 mm)
99.9
AT
50
N.O
99
N.C
95
Cumulative frequency percent
Drop-out
40
30
20
10
0
AT
90
80
70
60
50
40
30
20
10
5
1
0.1
10
20
30
Pull-in
40
50
AT
40
60
80
100
mW
Contact resistance
137
ORT233
REED SWITCH
(3) Breakdown voltage
(4) Insulation resistance
(DC 100 V)
99.9
DC : V
400
99
Cumulative frequency percent
Breakdown voltage
95
300
200
100
0
10
20
30
40
50
90
80
70
60
50
40
30
20
10
5
1
AT
Pull-in
0.1
10 9
10 10
10 11
10 12
Insulation resistance
(5) Electrostatic capacitance
(1 MHz)
Electrostatic capacitance
pF
1.5
1.0
0.5
0
10
20
30
Pull-in
138
40
50
AT
10 13
W
REED SWITCH
ORT233
OPERATING CHARACTERISTICS
Rated Value
Parameter
Unit
Min.
Typ.
Operate Time
—
—
1.0
ms
Bounce Time
—
—
N.O 1.0
ms
Bounce Time
—
—
N.C 1.5
ms
Release Time
—
—
0.5
ms
2000
6000
10000
Hz
—
—
200
Hz
Resonant Frequency
Maximum Operating Frequency
(1) Operate time
Max.
(2) Bounce time
(25 Hz : 100 AT energized)
99.9
(25 Hz : 100 AT energized)
99
ms
0.5
Cumulative frequency percent
0.4
Operate time
N.O
N.C
95
0.3
0.2
90
80
70
60
50
40
30
20
10
5
1
0.1
0.1
0
0
10
20
30
40
50
0.5
1.0
1.5
ms
Bounce time
AT
Pull-in
(3) Release time
(4) Resonant frequency
99.9
(25 Hz : 100 AT energized)
99
ms
95
20
10
0
5
10
15
20
25
AT
Cumulative frequency percent
Release time
30
90
80
70
60
50
40
30
20
10
5
1
Drop-out
0.1
2000
4000
6000
Hz
Resonant frequency
139
ORT233
REED SWITCH
MECHANICAL CHARACTERISTICS
(1) Lead tensile test (static load)
(2) Lead tensile strength
(2.27 kg - 10 sec)
99.9
AT
60
99
95
Cumulative frequency percent
50
Pull-in and Drop-out
40
30
20
PI
80
70
60
50
40
30
20
10
5
1
0.1
DO
10
90
2
4
6
Breaking load
0
mW
Contact resistance
80
60
CR
CR
40
N.O N.C
Before test
After test
ENVIRONMENTAL CHARACTERISTICS
(1) Temperature characteristics
40
CR
Rate of change (percent)
30
20
PI
10
DO
0
–10
–20
–30
–40
–20
0
20
40
Temperature
140
60
80
100
120
°C
8
10 kg
REED SWITCH
ORT233
(2) Temperature cycle
(3) Temperature and humidity cycle
to 65°C
(–10°C
80% to 98% )
AT
60
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(–55°C to 125°C)
30
20
PI
DO
10
30
20
DO
10
0
0
mW
mW
80
Contact resistance
Contact resistance
PI
60
CR
CR
40
N.O N.C
Before test
80
60
CR
CR
40
N.O N.C
After test
(4) High temperature storage test
Before test
(5) Low temperature storage test
(–40°C-500 H)
AT
60
50
50
40
40
Pull-in and Drop-out
Pull-in and Drop-out
(125°C-500 H)
AT
60
30
20
PI
10
30
20
PI
10
DO
DO
0
0
mW
mW
80
Contact resistance
Contact resistance
After test
60
CR
CR
40
N.O N.C
Before test
80
60
CR
CR
40
N.O N.C
After test
Before test
After test
141
ORT233
REED SWITCH
(6) Shock test
(NC : close Æ open)
(30 G - 11 ms)
AT
60
G
1500
40
30
20
1000
Acceleration
Pull-in and Drop-out
50
PI
10
DO
500
Misoperation
area
0
Contact resistance
mW
80
60
0
CR
CR
N.O N.C
Before test
After test
(7) Vibration test
(20 G - 10 to 1000Hz)
AT
60
Pull-in and Drop-out
50
40
30
PI
10
DO
0
Contact resistance
mW
80
60
CR
CR
40
N.O N.C
Before test
142
20
30
Pull-in
40
20
10
After test
40
50
60
AT
REED SWITCH
ORT233
LIFE EXPECTANCY DATA: ORT233
Cumulative failure rate
(%)
99.9
Load conditions
Voltage : 5 VDC
Current : 100 mA, 1 mA, 5 mA
Load : Resistive load
No failure
90
70
50
30
1 mA
5 mA
100 mA
10
5
1
0.1
0
2
3
5 7 10 5
2
3
5 7 10 6
2
5 7 10 7
3
Number of operations
2
3
5 7 10 8
* Arrow indicates number
of operations where
test was completed
Load conditions
Cumulative failure rate
(%)
99.9
Voltage : 12 VDC
Current : 5 mA, 10 mA, 100 mA
Load : Resistive load
90
70
50
30
100 mA
10 mA
5 mA
10
5
1
0.1
0
2
3
5 7
10 5
2
3
5 7
10 6
2
3
5 7
10 7
2
3
5 7
10 8
Number of operations
Load conditions
Voltage : 24 VDC
Current : 50 mA, 100 mA
Load : Resistive load
Cumulative failure rate
(%)
99.9
90
70
50
30
100 mA
50 mA
10
5
1
0.1
0
2
3
5 7 10 4
2
3
5 7 10 5
2
3
5 7 10 6
2
3
5 7 10 7
Number of operations
143