C&H Technology RWM User Manual
6121 Baker Road,
Suite 108
Minnetonka, MN 55345
www.chtechnology.com
Phone (952) 933-6190
Fax (952) 933-6223
1-800-274-4284
Thank you for downloading this document from C&H Technology, Inc.
Please contact the C&H Technology team for the following questions -
Technical
Application
Assembly
Availability
Pricing
Phone – 1-800-274-4284
E-Mail – sales@chtechnology.com
www.chtechnology.com - SPECIALISTS IN POWER ELECTRONIC COMPONENTS AND ASSEMBLIES - www.chtechnology.com
RWM
Vishay Sfernice
Enamelled Wirewound Power Resistors
Axial Leads
FEATURES
• High dissipation up to 30 W (25 °C)
• Fire Proof
• Excellent Endurance typical drift ± 1.5 % after
1000 h
• Conformal Vitreous Enamel
• All Welded Construction
• Low ohmic values 0.1 Ω available
• Termination: Sn/Ag/Cu
RoHS
COMPLIANT
As a result of more than 50 years of experience and
continuous improvements the RWM Series of resistors
features proven reliability in AC or DC applications.
The high quality of the RWM resides mainly in the use of a
proprietary VISHAY SFERNICE enamel fired at high
temperature and free from any compound liable to corrode
the resistive wire.
DIMENSIONS in millimeters
25 min. A 25 min.
TECHNICAL SPECIFICATIONS
DESIGNATIONS POWER RATING
VISHAY
SFERNICE
STYLES
RWM 4 x 10 RB59 JB 2.6 W 3 W 5.5 W
RWM 4 x 22 RB61 HB 4.5 W 5 W 7 W
RWM 5 x 26 RB57 - 6 W 7 W 10 W
RWM 6 x 22 RB57 KB 6 W 7 W 10 W
RWM 8 x 26 RB60 - 7 W 8 W 10 W
RWM 6 x 34 RB60 LB 7 W 8 W 12 W
RWM 8 x 34 RB58 - 9.5 W 11 W 14 W
RWM 8 x 45 RB58 MB 9.5 W 11 W 20 W
RWM 10 x 45 - - 21 W 25 W 25 W
RWM 10 x 64 - - 21 W 25 W 25 W
RWM 10 x 65 - - 25.8 W 30 W 30 W
Undergoes European Quality Insurance System (CECC)
CECC
40201
-001
CECC
40201
-002
at
+ 70 °C
at
+ 25 °C
With
Surface
Temp.
≤ + 450 °C
The performance of this series of professional resistors fully
meets the requirements of the following specifications:
– NF C 83-210-001
– CECC 40201-001
– BS - CECC 40201-002
Ø 0.8 ± 0.1 Ø B
Ohmic
Range in
Relation to
Tolerance
± 5 %
E24 Series
0.1 Ω
10 kΩ
0.1 Ω
16 kΩ
0.1 Ω
27 kΩ
0.1 Ω
39 kΩ
0.1 Ω
27 kΩ
0.33 Ω
36 kΩ
0.33 Ω
36 kΩ
0.47 Ω
62 kΩ
0.47 Ω
62 kΩ
0.68 Ω
100 kΩ
0.68 Ω
100 kΩ
Qualified
Ohmic
Range
NF C
83-210
0.1 Ω
10 kΩ
0.1 Ω
6.8 kΩ
0.15 Ω
10 kΩ
0.15 Ω
39 kΩ
0.33 Ω
15 kΩ
0.47 Ω
33 kΩ
Limiting
Element
Voltage
120 V 4.8 kΩ 12
300 V - 22.1
350 V 18.8 kΩ 24.7
350 V 17.5 kΩ 18
- 500 V - 24.7
500 V 31 kΩ 33.7
- 650 V - 33.7
650 V 38 kΩ 45.8
- 800 V 25.6 kΩ 45.8
- 800 V 25.6 kΩ 63.8
- 800 V 21.3 kΩ 63.8
Critical
Resis-
tance
DIMENSIONS
IN mm
A Ø B
± 1
5.5
± 1
5.5
± 1
7.4
± 1
6.5
± 1
7.4
± 1
7.4
± 1
7.4
± 2
9.4
± 2
9.4
± 1
9.4
± 1
9.4
± 1
± 1
± 1.5
± 1
± 1.5
± 1.5
± 1.5
± 1.5
± 1.5
± 1.5
± 1.5
WEIGH T
IN g
1
2
3
2.2
3
4
4
8
8
14
14
www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 50008
38 Revision: 11-Dec-06
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