SERIES
172
CENTIGRID®
COMMERCIAL RELAYS
DPDT
SERIES
DESIGNATION
RELAY TYPE
172
DPDT basic relay
172D
DPDT relay with internal diode for coil transient suppression
INTERNAL CONSTRUCTION
DESCRIPTION
The 172 Centigrid® relay is an ultraminiature, hermetically sealed, armature
UPPER
STATIONARY
CONTACT
UNI-FRAME
relay for commercial applications. Its low profile height (.280") and .100" grid
spaced terminals, which preclude the need for spreader pads, make it an ideal
ARMATURE
LOWER
STATIONARY
CONTACT
choice where extreme packaging density and/or close PC board spacing are
required.
MOVING
CONTACT
The basic operating concept and internal structure are similar to Teledyne’s
DPDT 114 Centigrid® relay. Unique construction features and manufacturing
techniques provide overall high reliability and excellent resistance to
environmental extremes:
• All welded construction.
rigidity.
• High force/mass ratios for resistance to shock and vibration.
• Advanced cleaning techniques provide maximum assurance of internal
cleanliness.
• Precious metal alloy contact material with gold plating assures excellent
high current and dry circuit switching capabilities.
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
The Series 172 relay has an internal discrete silicon diode for coil transient
–65°C to +125°C
Temperature Storage
(Ambient)
Operating –55°C to +85°C
suppression.
Vibration
(General Note 1)
10 g’s to 500 Hz
By virtue of its inherently low intercontact capacitance and contact circuit
Shock
(General Note 1)
30 g’s,
6 msec, half-sine
Enclosure
Hermetically sealed
Weight
0.15 oz. (4.3g) max.
172 Page 91
losses, the 172 relay is an excellent subminiature RF switch for frequencies
well into the UHF spectrum (see Figure 1). Applications include
telecommunications, test instruments, mobile communications, attenuators,
and automatic test equipment.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2003 TELEDYNE RELAYS
172/1203/Q1
CENTIGRID® AND TO-5
• Unique uni-frame design providing high magnetic efficiency and mechanical
SERIES 172
GENERAL ELECTRICAL SPECIFICATIONS (@25°C) (Notes 2 & 3)
Contact Arrangement
Rated Duty
Contact Resistance
2 Form C (DPDT)
Continuous
0.15 ohm max. before life; 0.3 ohm max. after life at 1A/28Vdc (measured 1/8" from header)
Contact Load Ratings (DC)
(See Fig. 1 for other DC
resistive voltage/current ratings)
Resistive:
Inductive:
Lamp:
Low Level:
1 Amp/28Vdc
200 mA/28Vdc (320 mH)
100 mA/28Vdc
10 to 50 µA/10 to 50mV
5,000,000 cycles (typical) at low level
500,000 cycles (typical) at 0.5A/28Vdc resistive
100,000 cycles min. at all other loads specified above
Contact Life Ratings
Contact Overload Rating
Contact Carry Rating
Operate Time
Release Time
Intercontact Capacitance
Insulation Resistance
Dielectric Strength
Negative Coil Transient 172
Diode P.I.V. 172D
2A/28Vdc Resistive (100 cycles min.)
Contact factory
6.0 msec max. at nominal rated coil voltage
172: 3.0 msec max. 172D: 6.0 msec max.
0.4 pf typical
1,000 megohms min. between mutually isolated terminals
Atmospheric pressure: 300 Vrms/60Hz
2.0 Vdc Max.
60 Vdc Min.
DETAILED ELECTRICAL SPECIFICATIONS (@25°C) (Note 3)
BASE PART
NUMBERS
172-5
172D-5
172-12
172D-12
172-26
172D-26
5.0
5.8
64
3.8
405
12.0
16.0
400
9.0
360
26.5
32.0
1600
18.0
440
Nom.
Max.
Coil Voltage (Vdc)
Coil Resistance (Ohms ±20%)
Pick-up Voltage (Vdc, Max.) Pulse Operation
Coil Operating Power at Nominal Voltage (Milliwatts)
OUTLINE DIMENSIONS (Note 4)
SCHEMATIC DIAGRAM
CASE DETAIL
TERMINAL LOCATIONS
(Viewed from Terminals, Numbers for Reference Only)
.750 MIN.
(19.05)
.031 REF
(.79)
.280 MAX*
(7.11)
5
+.05
(.43 –.03 )
8
1
172
2
6
+.002
.017 –.001 DIA
4
.100 .010 TYP
(2.54 .25)
3
.335
SQ MAX.
(8.51)
DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS)
*Unless otherwise specified, 0.280 (7.11) or 0.380 (9.65) height may be supplied. To order the lower profile
exclusively, add /28 to the part number, e.g. 172-26/28 (Note: /28 not marked on part).
172D
SCHEMATIC IS VIEWED FROM TERMINALS
GENERAL NOTES
1. Relay contacts will exhibit no chatter in
excess of 10 µsec or transfer in excess
of 1 µsec.
2. “Typical” characteristics are based on
available data and are best estimates.
No on-going verification tests are
performed.
3. Unless otherwise specified, parameters
are initial values.
4. Relays can be supplied with a spacer
pad. See appendix.
PERFORMANCE CURVES (Note 2)
TYPICAL DC CONTACT RATING (RESISTIVE)
TYPICAL RF PERFORMANCE
0
.1
.2
.3
.4
INSE
10
20
30
40
50
60
70
LOSS
1.92
1.22
S
T
C
1.07
NTA
S CO
S
O
ACR
S 1.02
POLE
TION
S
A
S
L
O
1.01
ISO
ACR
TION
ISOLA
1.00
1.00
0.5
.1
.5
1.0
WR)
S (VS
N LOS
R
RETU
.01
300
LOAD VOLTAGE (VDC)
RTIO
N
VSWR
dB
CENTIGRID® AND TO-5
7
.335 SQ MAX.
(8.51)
.035 REF
(.89)
250
200
150
100
50
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
FREQUENCY (GHz)
LOAD CURRENT (AMPS DC)
FIGURE 1
FIGURE 2
©2003 TELEDYNE RELAYS
0.8
0.9
1.0
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
172 Page 92
172/1203/Q1