www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 50008
38 Revision: 30-Aug-07
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 hours
•Conformal Vitreous Enamel
•All Welded Construction
•Low ohmic values 0.1 Ω available
•Termination: Sn/Ag/Cu
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.
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
DIMENSIONS in millimeters
Undergoes European Quality Insurance System (CECC)
RoHS
COMPLIANT
25 min. A 25 min.
Ø 0.8 ± 0.1 Ø B
TECHNICAL SPECIFICATIONS
VISHAY
SFERNICE
STYLES
DESIGNATIONS POWER RATING Ohmic
Range in
Relation to
Tolerance
± 5 %
E24 Series
Qualified
Ohmic
Range
NF C
83-210
Limiting
Element
Voltag e
Critical
Resis-
tance
DIMENSIONS
IN mm
WEI GHT
IN g
CECC
40201
-001
CECC
40201
-002
at
+ 70 °C
at
+ 25 °C
With
Surface
Temp.
≤ + 450 °C
A Ø B
RWM 4 x 10 RB59 JB 2.6 W 3 W 5.5 W 0.1 Ω
10 kΩ
0.1 Ω
10 kΩ120 V 4.8 kΩ12 ± 1 5.5 ± 1 1
RWM 4 x 22 RB61 HB 4.5 W 5 W 7 W 0.1 Ω
16 kΩ
0.1 Ω
6.8 kΩ300 V - 22.1 ± 1 5.5 ± 1 2
RWM 5 x 26 RB57 - 6 W 7 W 10 W 0.1 Ω
27 kΩ
0.15 Ω
10 kΩ350 V 18.8 kΩ24.7 ± 1 7.4 ± 1.5 3
RWM 6 x 22 RB57 KB 6 W 7 W 10 W 0.1 Ω
39 kΩ
0.15 Ω
39 kΩ350 V 17.5 kΩ18 ± 1 6.5 ± 1 2.2
RWM 8 x 26 RB60 - 7 W 8 W 10 W 0.1 Ω
27 kΩ- 500 V - 24.7 ± 1 7.4 ± 1.5 3
RWM 6 x 34 RB60 LB 7 W 8 W 12 W 0.33 Ω
36 kΩ
0.33 Ω
15 kΩ500 V 31 kΩ33.7 ± 1 7.4 ± 1.5 4
RWM 8 x 34 RB58 - 9.5 W 11 W 14 W 0.33 Ω
36 kΩ- 650 V - 33.7 ± 1 7.4 ± 1.5 4
RWM 8 x 45 RB58 MB 9.5 W 11 W 20 W 0.47 Ω
62 kΩ
0.47 Ω
33 kΩ650 V 38 kΩ45.8 ± 2 9.4 ± 1.5 8
RWM 10 x 45 - - 21 W 25 W 25 W 0.47 Ω
62 kΩ- 800 V 25.6 kΩ45.8 ± 2 9.4 ± 1.5 8
RWM 10 x 64 - - 21 W 25 W 25 W 0.68 Ω
100 kΩ- 800 V 25.6 kΩ63.8 ± 1 9.4 ± 1.5 14
RWM 10 x 65 - - 25.8 W 30 W 30 W 0.68 Ω
100 kΩ- 800 V 21.3 kΩ63.8 ± 1 9.4 ± 1.5 14