RWM
Vishay Sfernice
Enamelled Wirewound Power Resistors
Axial Leads
FEATURES
• High dissipation up to 30 W (25 °C)
• Fire Proof
RoHS
COMPLIANT
• 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
25 min.
A
25 min.
Ø B
Ø 0.8 0.ꢀ
TECHNICAL SPECIFICATIONS
DIMENSIONS
IN mm
Ohmic
Range in
Relation to
Tolerance
5 %
DESIGNATIONS
POWER RATING
Qualified
VISHAY
SFERNICE
STYLES
Ohmic Limiting Critical
Range Element Resis-
WEIGHT
IN g
With
Surface
Temp.
CECC CECC
4020ꢀ 4020ꢀ
at
at
NF C
83-2ꢀ0
Voltage tance
A
Ø B
+ 70 °C + 25 °C
-00ꢀ
-002
E24 Series
≤ + 450 °C
0.1 Ω
10 kΩ
0.1 Ω
10 kΩ
1
1
1
RWM 4 x 10 RB59
RWM 4 x 22 RB61
RWM 5 x 26 RB57
RWM 6 x 22 RB57
JB
HB
-
2.6 W
4.5 W
6 W
3 W
5 W
5.5 W
7 W
120 V
300 V
4.8 kΩ
12
22.1
5.5
1
2
0.1 Ω
16 kΩ
0.1 Ω
6.8 kΩ
1
1
1
-
5.5
7.4
6.5
7.4
7.4
7.4
9.4
9.4
9.4
9.4
0.1 Ω
27 kΩ
0.15 Ω
10 kΩ
1.5
1
7 W
10 W
10 W
10 W
12 W
14 W
20 W
25 W
25 W
30 W
350 V 18.8 kΩ 24.7
350 V 17.5 kΩ 18
3
0.1 Ω
39 kΩ
0.15 Ω
39 kΩ
KB
-
6 W
7 W
2.2
3
0.1 Ω
27 kΩ
1
1
1.5
1.5
1.5
1.5
1.5
1.5
1.5
RWM 8 x 26
RB60
7 W
8 W
-
500 V
500 V
650 V
650 V
-
24.7
31 kΩ 33.7
33.7
38 kΩ 45.8
0.33 Ω
36 kΩ
0.33 Ω
15 kΩ
RWM 6 x 34 RB60
LB
-
7 W
8 W
4
0.33 Ω
36 kΩ
1
2
2
1
1
RWM 8 x 34
RB58
9.5 W
9.5 W
21 W
21 W
11 W
11 W
25 W
25 W
-
-
4
0.47 Ω
62 kΩ
0.47 Ω
33 kΩ
RWM 8 x 45 RB58
MB
-
8
0.47 Ω
62 kΩ
RWM 10 x 45
-
-
-
-
-
-
800 V 25.6 kΩ 45.8
800 V 25.6 kΩ 63.8
800 V 21.3 kΩ 63.8
8
0.68 Ω
100 kΩ
RWM 10 x 64
RWM 10 x 65
-
14
14
0.68 Ω
100 kΩ
-
25.8 W 30 W
Undergoes European Quality Insurance System (CECC)
www.vishay.com
38
For technical questions, contact: sfer@vishay.com
Document Number: 50008
Revision: 30-Aug-07