1
History
•
1933 - Vitrohm Elektroteknisk Fabrik founded in Denmark
•
1954 - Deutsche Vitrohm GmbH founded in Germany (Sales &
Marketing)
•
1956 - Deutsche Vitrohm GmbH & Co. KG founded in Germany
(Production, Sales and Marketing)
•
1971 - Vitrohm Portuguesa Lda founded in Portugal
•
1980 - Deutsche Vitrohm Germany acts as group headquarters
•
1995 - Vitrohm China Far East Electronics Ltd founded in Bengbu
PRC: People Republic of China (Anhui)
•
1996 - Acquired by Yageo Corp., Taiwan
2
1997 - Group restructured; Vitrohm Holding GmbH owns:
- Vitrohm Deutschland GmbH
- Vitrohm Portuguesa, Lda.
- Vitrohm China Far East Electronics Co., Ltd
2000 - Production centralized in Portugal
- Vitrohm Deutschland renamed to Yageo Europe GmbH
2004 – VITROHM becomes separated Business Unit within Yageo Group
- Production, Customer Service & Logistics in Portugal
- Sales & Marketing in Germany
RoHS
3
Quality policy
SUPERIOUR QUALITY & PERFECT SERVICE
Concept
– Prevention
– Shorten Feedback Loop
– Continuous Improvement
– Perfect Service
Quality Feedback Loop
– Supplier
– Distribution
– Engineering
– Customer Service
– Marketing
ISO Certificate: NP EN ISO 9001:2000
• Self Checking
Implementation
• Enhance Roving Inspection:
Reducing Lot Inspection
• Training
• Statistical Process Control
• Equipment Calibration
• Reliability Testing
• Failure Analysis
• Traceability
• Internal Audits
• Quality Improvement Team
4
RoHS - Information
•
•
•
•
All products are produced with leadfree terminals since 01/2005 and comply
with „Directive 2002/95/EC RoHS“ .
All leadfree products are suitable for „leadfree soldering processes“
with respect to increased temperature and time (260°, 10s) and backward
compatibility is confirmed.
Since April 15th 2005 all shipments are completely leadfree.
Product labels show „e3“ and boxes will RoHS-label as below.
RoHS
2002/95/EC
5
RoHS - Information
6
Introduction and general applications
1. Introduction to products
There are 4 major resistor families in the Vitrohm program. Those are described
in a general way further below and the description may also help to a basic
understanding of the nomenclature.
a)
Wirewound resistors
Here we find 2 subgroups, the main difference being the carrier material for the
resistive wire.
aa) Wirewound resistors, ceramic core, CR-family
Series of axial conformally coated resistors, wound on ceramic cores of
different dimensions, providing power ratings from 1W to 7W at 70°C.
Typically, resistance range is between R10 and 1K0 at nominal tolerances of
5; 2; 1 and 0,5% and TC of 20 or less ppm/ °C.
Included is a subfamily CRF, flameproof and failsate for safety applications.
7
ab)
Wirewound resistors, glassfibre core, K-family
The resistive wire is continiously wound on a glassfibre core, a special
method is used for the internal contact between resistive wire and
terminals. This family is deeply structured in terms of size and styles.
Resistance range is typically between 0R1 and some kiloOhms at
tolerances of 5 and 10%, nominal power ranges from 1W to 40W at 70°C.
Series: KC, KP, KWA, KWP, KWV, KH, KV, KT, KF
ac)
Wirewound resistors, glassfibre core, BW-family
Basically same construction as above, miniaturized 0,75W and 1,5W sizes,
molded in phenolic resin for protection and autoinsertion.
Included is a subfamily BWF, flameproof and failsafe for safety
applications.
8
b)
Current-sense, low-ohm resistors
Three subgroups, mainly structured by phyisical appearance, based
on strip-format resistive alloys.
ba) Miniature size, BWL family
The resistive element, welded to copper wire terminals is molded in
phenolic resin for protection and auto-insertion.
Resistance range is from R005 to R062 at 5 and 1% tolerance,
1,5W power rating.
bb) Leaded resistors, KN family
Resistive elements welded to copper leads.
Open frame, axial style, 1W to 3W, resistance range R003 to R100,
5; 3; 1% tolerance.
Open frame, radial style, as above, preformed for easy board assembly,
short leads reduce temperature coefficient significantly.
Ceramic case, axial style, 4W to 9W, R003 to R100, tolerances are
5, 3 and 1%.
bc) Semi-customized LPS resistors
U-shaped resistive strip of solderable alloy, end-terminated, 2 or 4
terminals for either sense-connection or high-current ratings.
Resistance range between R0005 and R060 at 5% tolerance.
9
c)
Metal glaze film resistors
A family of thick film resistors.
ca)
Axial style, series RG
The thick film resistive elements, leads attached by high-temp-soldering,
are molded in bakelite for total protection.
2 sizes (0207, 0309) available with power ratings of max. 0,7 and 0,9W,
resistance range from R33 to 3M32 at tolerances of 2, 1, 0,5% with
temperature coefficients of 100, 50 and 25ppm / °C.
cb)
Vertical style, series RGU
A single ended version of metal glaze resistors, resistance range as
above, power rating 0,5W.
10
d)
SMD power resistors, RWx family
One SMD package, size 5020 (12 by 5mm), power rating 2,2 W at 25°C.
3 different technologies.
da)
RWN 5020, current-sensor, resistance range from R003 to R050 at 5%
and 1% tolerance.
db)
RWC 5020, wirewound element, resistance range form R051 to 100R at
5 and 1% tolerance with TC 80ppm/°C
dc)
RWS 5020, wirewound element, failsafe like series CRF.
Resistance range 1R to 100R at 5% tolerance.
dd)
RWF 5020, wirewound element, failsafe like series BWF.
Resistance range R1 to 1K at 5 and 10% tolerance.
de)
RWP 5020, metal powerfilm element, resistance range from 10R to 1M at 1%
and 50ppm/°C TC.
11
Features and general applictions
Note:
Resistors are exchangeable. A wirewound resistor can
easily do the job of a carbon film or metaloxidfilm resistor.
„Typical“ application notes exist only for a few special
products.
Very often, the use of resistors grew historically, often
regionally due to availability.
12
Wirewound resistors
CR series, the classical ww-product for general and precision
applications, for a limited power range within a given range of
resistance values. The all-welded contact construction helps to
avoid contact variations and allows a choice of close tolerances.
As sizes are almost (!!) standardized globally this is the „drop-in“
solution in most cases.
The CRF version is a safety special, developed to fail safe
when exposed to mains voltage. Typical applications are in
plug-in-power supplies and mobile-phone battery chargers,
but not limited to that. Any unit connected to the mains
voltage is protected somehow to avoid electrical shock risks.
13
Construction of Precision Wire-Wound Resistors
14
Wirewound Resistors - axial
Type: CR
Resistance Range: R10 ~ 2K
Tol: ±0,5%, ±1%; ±2% and ±5%
Power Range: 1W ~ 7,2W
Coating: Conformal coated
CR251-0
P40 1,1W
P70 1,0W
Application:
Advantage:
Competition:
Customer:
Ordering example:
CR253-0
2,5W
2,0W
CR254-0
3,0W
2,5W
CR255-0
3,3W
3,0W
CR256-0
4,0W
3,5W
CR257-0
5,0W
4,3W
CR258-0
5,5W
5,0W
CR259-0
7,2W
6,5W
power application – pulse application
precision power application
low ohmics available, best quality – price relation,
Welwyn, Vishay/BCC, HTR, Phönix
Industry – Automotive – Household – Entertainment
CR259-0
1
T
10R
Type
Tolerance Pack.-Code R-Value
Datasheet
15
Wirewound Resistors – axial LOW COST
Type: RX
Resistance Range: R10 ~ 30K
Tol: ±1% and ±5%
Power Range: 1W ~ 12W
Coating: Conformal coated, flameproof
Application: power application – pulse application
precision power application
Advantage: low ohmics available, best quality – price relation,
Competition: Royalohm, Firstohm, New Sencere
Customer: Industry – Automotive – Household – Entertainment
Ordering example: RX06133W
5
T
100R
Type
Tolerance Pack.-Code R.-Value
Datasheet
16
Wirewound Resistors - axial – safety version
Type: CRF
Resistance Range: 1R0 ~ 330R
Tol: ±5%
Power Range: 2W ~ 5W
Coating: Conformal coated
CRF251-4 CRF253-4
2,5W
P40 1,1W
2,0W
P70 1,0W
CRF254-4 CRF256-4
3,0W
4,0W
2,5W
3,5W
CRF257-4
5,0W
4,3W
Application: power application – pulse application
device opens immediately, if main voltage is applied (230 Veff)
battery chargers
Advantage: low ohmics available, best quality – price relation,
Competition: none
Customer: Industry – Automotive – Household – Entertainment
Ordering example: CRF254-4
5
T
Type
Tolerance Package
15R
Value
Datasheet
17
Features and general applications
K-family
The general purpose ww-product with reasonable accuracy.
Especially the ceramic cased styles allow very high pulse overload as they
are embedded in flexible material ( except series KWP, KWA and KWV) and
not potted into cement as most of other products are. Vitrohm uses a most
reliable method for the internal mechanical contacts to eliminate the typical
contact-variation problem.
The various styles allow a good choice for best board-mount solutions,
especially series KP, KWP are designed for direct stand-off
PCB-insertion. To add more safety to power supplies, motor drives
and control units, series KT/KF offer a circut-breaker function when overload
is applied. This option is also often used in TV and house-hold applications
power supplies. As coated resistors are regarded „non-insulated“ in terms of
shock-protection, the ceramic case offers a good solution if insolution is of
concern.
18
19
Wirewound Resistors - axial
Type: KH
Resistance Range: R056 ~ 82K
Tol: ±5% and ±10%
Power Range: 4W ~ 17W
Coating: Ceramic housed
KH206-8 KH208-8 KH210-8 KH212-8 KH214-8 KH216-8 KH218-8
4W
5W
7W
7W
9W
11W
17W
Application: power application – pulse application
power supplies, metering
special versions for pulse application available
custom design terminals available
Advantage: low ohmics and high ohmics available, best quality – price relation,
4; 5; 7; 9 Watt types radial taped available
Competition: Krah, Vishay, HTR, Meggitt
Customer: Industry – Automotive – Household – Entertainment
Ordering example: KH208-8
5
B
9R1
Type
Tolerance Pack.-Code R.-Value
KP
Datasheet
20
Wirewound Resistors - vertical
Type: KV
Resistance Range: R056 ~ 82K
Tol: ±5% and ±10%
Power Range: 4W ~ 17W
Coating: Ceramic housed
KV206-3 KV208-3 KV210-3 KV212-3 KV214-3 KV216-3 KV218-3
4W
5W
7W
7W
9W
11W
17W
Application: power application – pulse application
power supplies
special versions for pulse application available
custom design terminals available
Advantage: low ohmics and high ohmics available, best quality – price relation,
space saving
Competition: Krah, Vishay, HTR, Meggitt
Customer:
Industry – Automotive – Household – Entertainment
Ordering example: KV208-3
5
Type
Tolerance
B
Pack.-Code
9R1
R.-Value
Datasheet
21
Wirewound Resistors – axial – circuit breaker
Type: KF
Resistance Range: R10 ~ 82K
Tol: ±5% and ±10%
Power Range: 2,5W ~ 11W
Coating: Ceramic housed
KF206-4 KF208-4 KF210-4 KF212-4 KF214-4 KF216-4 KF218-4
P70 1,2W
1,5W
2,5W
2,0W
3W
4W
6W
2,5W
3,0W
4,5W
3,5W
5,0W
7,0W
11W
P25
Application: power application – pulse application, power supplies
resistors desiged for circut protection – the solder joint will open after
short time overload, custom design terminals available
Advantage: low ohmics and high ohmics available, best quality – price relation,
Competition: Krah
Customer: Industry – Automotive – Household – Entertainment
Ordering example: KF212-4
5
B
1K
Type
Tolerance Pack,.Code R-Value
Datasheet
22
Wirewound Resistors – vertical - circuit breaker
Type: KT
Resistance Range: R075 ~ 82K
Tol: ±5% and ±10%
Power Range: 2W ~ 4,5W
Coating: Ceramic housed
KT212-7 KT214-7 KT216-7 KT218-7
2W
2,5W
3,5W
4,5W
Application: power application – pulse application, power supplies
custom design terminals available
resistors desiged for circut protection – the solder joint will open after
short time overload
Advantage: low ohmics and high ohmics available, best quality – price relation,
space saving
Competition: Krah
Customer: Industry – Household – Entertainment
Ordering example:
KT214-7
5
B
1K5
Type
Tolerance Pack.-Code R.-Value
Datasheet
23
Wirewound Resistors – radial – AMP contacts
Type: KWA
Resistance Range: R51 ~ 10K
Tol: ±5%
Power Range: 15W ~ 40W
Coating: Ceramic housed
KWA15
KWA20
KWA30
KWA40
20W
30W
40W
P70 15W
Application: power application – pulse application
Advantage: low ohmics and high ohmics available, best quality – price relation,
defined stand-off
Competition: HTR, Meggitt, Far East manufacturers
Customer: Industry – Household – Entertainment
Ordering example:
KWA40
5
B
3K6
Type Tolerance Pack.-code R.-value
Datasheet
24
Wirewound Resistors - radial
Type: KWP
Resistance Range: R20 ~ 10K
Tol: ±5% and ±10%
Power Range: 3W ~ 20W
Coating: Ceramic housed
KWP
KWP
KWP
KWP
KWP
KWP
KWP
KWP
330-3/5/7 331-3/5/7 332-3/5/7 333-3/5/7 335-3/5/7 336-3/5/7 337-3/5/7 338-3/5/7
4,0W
5,0W
7,0W
9,0W
10W
15W
20W
P25 3,0W
2,2W
2,5W
3,0W
4,5W
4,5W
5,5W
8,0W
P70 2,0W
Application: power application – pulse application
special versions for pulse application available
custom design terminals available
Advantage: low ohmics and high ohmics available, best quality – price relation,
defined stand-off
Competition: HTR, Meggitt, Far East manufacturers
Customer: Industry – Household – Entertainment
Ordering example: KWP333-3
5
B
0R42
Type
Tolerance Pack.-Code R-value
Datasheet
25
Power Resistors, Metox – Element, radial,
Type: KWP
Resistance Range: 390R ~ 100K
Tol: ±5%
Power Range: 3W ~ 10W
Coating: Ceramic housed
KWP330-3/5/703 331-3/5/703 332-3/5/703 333-3/5/703 335-3/5/703 336-3/5/703
4,0W
5,0W
7,0W
9,0W
10W
P25 3,0W
2,2W
2,5W
3,0W
4,5W
4,5W
P70 2,0W
Application: power application – pulse application
special versions for pulse application available
custom design terminals available
Advantage: low ohmics and high ohmics available, best quality – price relation,
defined stand-off
Competition: HTR, Meggitt, Far East manufacturers
Customer:
Industry – Household – Entertainment
Ordering example: KWP336-303
5
B
100K
Type
Tolerance Pack.-Code R-value
Datasheet
26
Wirewound Resistors - vertical
Type: KWV
Resistance Range: R20 ~ 16K
Tol: ±5% and ±10%
Power Range: 2W ~ 10W
Coating: Ceramic housed
KWV302-3 KWV304-3 KWV306-3 KWV308-3 KWV309-3 KWV310-3
2W
3W
5W
7W
10W
10W
Application: power application – pulse application
Advantage: low ohmics and high ohmics available, best quality – price relation,
space saving
Competition: Meggitt, Vishay/BCC, Far East manufacturers
Customer:
Industry – Household – Entertainment
Ordering example:
KWV304-3
Type
5
B
Tolerance Pack.-Code
100R
R-value
Datasheet
27
Power Resistors – Metox Element - vertical
– ceramic case
Type: KWV
Resistance Range: 390R ~ 100K
Tol: ±5%
Power Range: 2W ~ 10W
Coating: Ceramic housed
KWV302-303 KWV304-303 KWV306-303 KWV308-303 KWV310-303
2W
3W
5W
7W
10W
Application: power application – pulse application
Advantage: low ohmics and high ohmics available, best quality – price relation,
space saving
Advantage: low ohmics and high ohmics available, best quality – price relation,
space saving
Competition: Meggitt, Vishay/BCC, Far East manufacturers
Customer:
Industry – Household – Entertainment
Ordering example: KWV304-303 5
B
100K
Type
Tolerance Pack.-Code R-value
Datasheet
28
Wirewound Resistors - axial
Type: KC
Resistance Range: R056 ~ 30K
Tol: ±5% and ±10%
Power Range: 1W ~ 3W
Coating: Conformal Coated, fiberglas core
KC200-0 KC202-0 KC204-0
1W
2W
3W
Application: power application – pulse application
special versions for pulse application available
custom design terminals available
Advantage: low ohmics and high ohmics available, best quality – price relation,
Competition: Krah, Vishay, Welwyn, HTR
Customer:
Industry – Automotive – Household – Entertainment
Ordering example KC200-0
5
Type
Tolerance
T
1R
Pack-Code R-Value
Datasheet
29
Wirewound Resistors - radial
Type: KP
Resistance Range: R10 ~ 36K
Tol: ±5% and ±10%
Power Range: 2W ~ 8W
Coating: Conformal Coated, fiberglas core
KP290 KP292
KP294
KP296
KP298
2W
4W
5W
6,5W
8W
Application: power application – pulse application
motor-control-units, dash boards
special versions for pulse application available
two terminal hights available
Advantage: low ohmics and high ohmics available, best quality – price relation,
defined stand-off, space saving
Competition: Krah, Vishay, HTR, Meggitt
Customer: Industry – Automotive – Household – Entertainment
Ordering example KP294-1
5
Type
Tolerance
B
Pack.-Code
1K3
R-Value
Datasheet
30
Features and general applications
BW family
A choice of small ww-products for auto-insertion, providing the advantages of
good overload aund pulse capability, reliable low-ohmic values and full electrical
insulation due to the molded case.
Typically used in low-power applications with rush-in-current problems, very
often in automatoive industrie.
For circuit-protection, BWF series is the ultimate choice. Designed for a defined
fusing characteristic, it offers the combination of a current-limiting resistor and
a fuse. WW-technology allows close fusing tolerances for safe circuit-interruption
at still good pulse load performance.
The range of applications is wide, but BWF‘s are commonly used in TV and audio
power supplies and end-stage amplifiers, electrical hand-held devices
(i.e. shavers), in some automotive functions ( electrical motors protection) and for
line protection in telephone switchboards.
31
Wirewound Resistors – axial - moulded
Type: BW
Resistance Range: R10 ~ 2K4
Tol: ±5% and ±10%
Power Range: 0,75W ~ 1,5W
Coating: Moulded
BW234-0
BW235-0
0,75W
1,5W
Application:
power application – pulse application
Advantage:
low ohmics, best quality – price relation,
insulated body, taped for automatic insertion
Competition: IRC
Customer:
Industry – Automotive – Household – Entertainment
Ordering example: BW234-0
5
Type
Tolerance
T
1K
Pack-Code R-Value
Datasheet
32
Wirewound Resistors – axial – moulded - failsafe
Type: BWF
Resistance Range: R10 ~ 1K0
Tol: ±5% and ±10%
Power Range: 0,75W ~ 1,5W
Coating: Moulded
BWF237-0
BWF236-0
0,75W
1,5W
Application: power application – pulse application
circuit protection
Advantage: low ohmics available, best quality – price relation,
fail-safe, insulated, taped for automatic insertion
Competition: IRC
Customer:
Industry – Automotive – Household – Entertainment
Ordering example:
BWF237-0
5
T
1K
Type
Tolerance Pack.-Code R.-Value
Datasheet
33
Features and general applications
Current -sensors
BWL
Styled like a „normal“ BW resistor, it offers all the advantages of size-to-power
ratio, auto-insertion and electrical insulation. The resistive element, however,
is a true current sensing device and can carry up to 25A.
Applications are mainly found in automotive industry.
KN-family
Key applications are in Switch Mode Power Supplies where the typical
requirement is for very low resistance values, some current carrying capacity
and non-inductive construction for relatively high switching frequencies.
In automotive industry KN‘s are well used to control electrical motors, servos and
to sense lamp current for fault detection. ( head-light-control). If temperature
coefficient is of concern, radially preformed KN‘s are used, as their form
eliminates the disadvantage of the high TC of copper.
34
Features and general applications
Current –sensors
LPS family
Motor drivers and frequency converters are the major „consumers“ for these
semicustomized parts. In this very industrial type of business there is a tendency
to use tailored products for better suitability rather than common standards. A
number of some 600 different variants has been designed what clearly shows the
almost unlimited flexibility of this product group.
Again, also automotive customers use a lot of LPS resistors, and again it is
in electrical motor control and passenger comfort applications. One reason to
use LPS is the current carrying capacity up to 60A per pin, so a 4pin-unit can
carry up to 120A at about 7W power rating ( i.e. at R0005)
35
Low ohmic power resistor
Type: BWL0614
Resistance Range: R005 ~ R062
Tol: ±1 and ±5%
Power Range: 1,5 W
BWL0614
P70 1,5W
Application:
Advantage:
Competition:
Customer:
Ordering example: BWL0614
5
T
0R01
Type
Tolerance Pack.-Code R-Value
Datasheet
36
Current Sense Resistors - axial
Type: KN35X-0
Resistance Range: R003 ~ R10
Tol: ±1; ±3% and ±5%
Power Range: 1W ~ 3W
Coating: Metal-band without coating
P70
KN350-0
1W
KN351-0
2W
KN352-0
3W
Application:
Advantage:
switch–mode power supplies
low ohmics, tight tolerance available, best quality – price relation,
low inductance for high frequence
Competition: Krah, HTR
Customer:
Industry – Automotive – Household – Entertainment
Ordering example: KN351-0
3
B
0R033
Type
Tolerance Pack.-Code R.-Value
Datasheet
37
Current Sense Resistors – radially formed
Type: KN35x-009, -010 and -011
Resistance Range: R003 ~ R10
Tol: ±1; ±3% and ±5%
Power Range: 0,5 W ~ 1,5 W
Coating: Metal-band without coating
KN350-009 KN351-009 KN352-009 RM 10
KN351-010 KN352-010
RM 15
KN352-011
RM 20
0,5W
1,0W
1,5W
P70
Application: switch–mode power supplies
motor control (i.g. passenger comfort)
Advantage: low ohmics, tight tolerance available, best quality – price relation,
illiminated copper influence to TC, low inductance
Competition: Krah, HTR
Customer:
Industry – Automotive – Household – Entertainment
Ordering example: KN350-009 5
B
0R015
Type
Tolerance Pack.-Code R-Value
Datasheet
38
Current Sense Resistors - axial
Type: KN35X-8
Resistance Range: R003 ~ R10
Tol: ±1; ±3% and ±5%
Power Range: 4W ~ 9W
Coating: Metal-band, ceramic housed
KN350-8 KN351-8 KN352-8 KN353-8 KN354-8
4W
5W
7W
7W
9W
Application: switch–mode power supplies
increased power request
Advantage: low ohmics, tight tolerance available, best quality – price relation,
low inductance for high frequence
Competition: Krah, HTR
Customer: Industry – Automotive – Household – Entertainment
Ordering example: KN350-8
5
B
0R015
Type Tolerance Pack.-Code R-Value
Datasheet
39
Current Sense Resistors - radial
Type: LPS
Resistance Range: R0005 ~ R068
Tol: ±1; ±3% and ±5%
Power Range: 0.5W ~ 5W
Coating: Metal-band without coating
LPS355-0
LPS356-0
LPS357-1
LPS359-xxx
Pitch 10mm Pitch 15mm Pitch 15mm special customer
design
Application: switch–mode power supplies
motor control
Advantage: low ohmics, tight tolerance available, best quality – price relation,
low inductance, semi custom design
Competition: non
Customer: Industry – Automotive – Household – Entertainment
Ordering example: LPS355-0
5
B
0R01
Type
Tolerance Pack-Code R-Value
Datasheet
40
Ceramic Metal Plate Resistors
radial, low value, low inductance
Type: SLR / SLP
Resistance Range: R05 ~ 3R3
Tol: ±10%; ±5% on request
Power Range: 2W ~ 10W
Coating: Metal-band with ceramic
SLR/SLP2 SLR/SLP3 SLR/SLP5 SLR/SLP7 SLR/SLP10
2W
3W
5W
7W
10W
SLR/SLP22 SLR/SLP33 SLR/SLP55
2W+2W
3W+3W
5W+5W
Application: switch–mode power supplies
motor control
Advantage: low ohmics, best quality – price relation,
low inductance,
Competition: Fukushima Futaba, Royal Ohm,
Customer: Industry – Automotive – Household – Entertainment
Ordering example: SLR2
Type
10
Tolerance
B
0R1
Pack-Code R-Value
RE
Datasheet
41
Features and general applications
Metal glaze film resistors
RG and RGU family
Their reason of existence clearly is high reliability. Both styles contain the same
thick film element. The special glaze has been sintered onto aluminaoxide
ceramic of high purity at appr. 1200°C, the terminals are soldered to the elements
using high temp. solder and the final part is completely molded in phenolic, flame
resistant resin.
They withstand severest environmental conditions, survive tough electrical
ambience and still provide excellent performance.
Consequently, customers come from demanding industries. Naval, airborne and
railroad systems manufactors rely on quality and pay for it.
42
Construction of VITROHM Metal Glaze Resistors
43
Metal Glaze Resistors - flameproof
Type: RG
Resistance Range: R30 ~ 3M3
Tol: ± 0,5%; ± 1%; ± 2%
Power Range: 0,6 ~0,9W
TC ±25; ±50; ±100 ppm/K
Coating: moulded
RG515-0
RG520-0
0,5W
0,7W
Application: railroad safety systems, in-flight communication, ABS, Air-bag systems
Advantage: best quality – price relation, all-soldered construction, high reliability
Competition: IRC
Customer: Industry – Automotive
Ordering example: RG515-0
1
T
1K
Type
Tolerance Pack-Code R-Value
Datasheet
44
Metal Glaze Resistors - vertical - flameproof
Type: RGU
Resistance Range: R30 ~ 3M0
Tol: ± 0,5%; ± 1%; ± 2%
Power Range: 0,6 ~0,9W
TC ±25; ±50; ±100 ppm/K
Coating: moulded
RGU526-0
0,5W
Application: railroad safety systems, in-flight communication, ABS, Air-bag systems
Advantage: best quality – price relation, all-soldered construction, high reliability
Competition: IRC
Customer: Industry – Automotive
Ordering example: RGU520-0
1
Type
Tolerance
B
1K
Pack.-Code R.-Value
Datasheet
45
Metal Oxide Resistors – professional type
Type: PO
Resistance Range: R22 ~ 10M
Tol: ±1; ±2; ±5%
Power Range: 1W ~ 4W
TC ±50; ±200 ppm/K
Coating: coated with green colour lacquer
PO595-0 PO593-0 PO590-0 PO591-0
1W
2W
3W
4W
Application: all standard applications
high power applications
Advantage: best quality – price relation, good pulse-load performance
Competition: Vishay/BCC, Welwyn, Phönix
Customer: Industry – Automotiv – Household – Entertainment
Ordering example: PO593-0
5
Type
Tolerance
T
10K
Pack.-Code R.-Value
Datasheet
46
Wirewound Resistors – Aluminium Housed
Chassis Mount
Type: RE
Resistance Range: R10 ~ 35K
Tol: ±1%; and ±5%
Power Range: 5W to 250W
Coating: Conformal coated
RE605 RE610 RE615 RE630 RE640 RE650
7,5W
12,5W 25W
50W
100W
250W
Application: power application – pulse application
Advantage: Power, small size
Competition: Welwyn, Vishay/Dale, Meggit, ATE
Customer:
Industry
non inductive styles available
Ordering example: RE605
5
B
1K2
Type Tolerance Pack.-Code R.-Value
Datasheet
47
Features and general applications
SMD Power resistors
The latest step forward, using the experiene of leaded resistors for
surface-mount parts. Standart chip-resistors can (?) handle 1 W, often not
enough in industrial applications.
RWx5020 can dissipate real 2,2 W with reasonable dimensions.
The x stands for the customers choice
N for the current-sense product
C for the wirewound unit
P for the metal film part.
new developments
F for circuit protection again rush-in-current problems
S to failsafe when exposed to mains voltage (230V)
RWx family is packed for automatic placement in 24mm blister-tapes, reeled on
13‘ spools, 1500pcs on each.
There are no limits in applications, but so far the demand comes from
automotive, telecommunication and some metering manufacturers.
48
SMD POWER Resistors
Type: RWN, RWC, RWP
Resistance Range: 0R003 ~ 10M
Tol: ±1; 5 %
Power Range: 2,2 W
Moulded
RWN5020
RWC5020
0R002 – 0R05 0R01 – 200R
RWP5020
1R0 – 1M
Application: SMD high power applications, pulse applications
Advantage: best quality – price relation good pulse-load performance
Competition:Vishay/Dale, TT/IRC, KOA
Customer: Industry – Automotiv
Ordering example RWC5020
F
Type
Tolerance
K
Blister
13
1R
reel diameter R-value
Datasheet
49
SMD POWER Resistors
Type: RWF5020
Resistance Range: 0R1 ~ 1K
Tol: ±5; 10 %
Power Range: 2,2 W
Moulded RWF5020
Application: SMD high power applications, pulse applications
circuit protection
Advantage: Low ohmic available, best quality – price relation
fail-safe,
Competition: none
Customer: Industry – Automotiv - Household
Ordering example RWF5020
F
Type
Tolerance
K
13
1R
Blister reel diameter R-value
Datasheet
50
SMD POWER Resistors
Type: RWS5020
Resistance Range: 1R ~ 100R
Tol: ±5%
Power Range: 2,2 W
Moulded RWS5020
Application: SMD power applications, pulse applications
device opens immediately, if main voltage is applied (230V)
battery chargeers
Advantage: Low ohmic available, best quality – price relation
fail-safe,
Competition: none
Customer: Industry – Automotiv - Household
Ordering example RWS5020
F
Type
Tolerance
K
13
1R
Blister reel diameter R-value
Datasheet
51
SMD Metal Film Resistors Melf Style
Type: ZC
Resistance Range: R22 ~ 10M
Tol: ±1; 0,5; 0,25; 0,1 %
Power Range: 0,25 W ~ 1,0W
TC ±50; 25; 15 ppm/K
Coating: coated with blue colour lacquer
Type: ZC0204 - Minimelf
Type: ZC0207 - Melf
Application: SMD power applications, pulse applications
Advantage: best quality – price relation, good pulse-load performance
Competition: Vishay/BCC, KOA
Customer: Industry – Automotiv
Ordering example ZC0204
F
K
E
07
1K
Type Tolerance Blister TC Reel Diameter R-Value
Z
Datasheet
52
VITROHM Wirewound & Film Resistor
Ordering code
53
SMD Resistors
Ordering code
54
Summery:
• Main product groups: Power- and Low-Ohmic
Resistors
• Design-in Products:
–
–
–
–
–
Fusing/Safety Wirewound Resistors Series BWF/CRF
Plug able Wirewound Resistors Series KP/KWP
Standard Low Ohmic Power Resistors Series KN
Custom designed Low Ohmic Resistors Series LPS
New: Low Ohmic Resistors, radial in a flat Ceramic House
Series SLR/SLP
– Aluminium Housed Wirewound Resistors Series RE
– SMD Power Resistors Series RWN/RWC/RWP
– New: SMD Fusing/Safety Wirewound Resistors Series
RWF/RWS
55