User Manual

Heatsink Encased Wirewound Power Resistors
www.vishay.com For technical questions, contact: [e-mail] Document Number: 50013
52 Revision: 07-Dec-06
RH
Vishay Sfernice
FEATURES
• 5 Watt to 50 Watt at 25 °C
• NF C 83-210
• CECC 40 203
• High stability < 0.05 % year
• Low temperature coefficient typically ± 15 ppm/°C
• Wide range of values from 0.006 Ω to 130 kΩ
• Termination = Sn/Ag/Cu
Encased in a compact and light heatsink offering complete environmental protection, great mechanical strength and easy
mounting. Non inductive versions can be supplied under the RHNI designation (please indicate required specifications and
frequency range upon ordering).
DIMENSIONS in millimeters
Undergoes European Quality Insurance System (CECC)
RoHS
COMPLIANT
D
A
N
M
F
Ø 2
Ø K
Ø P
E
Q
L
G
H
B
J
RH
MODEL AND
STYLE
RH5 RH10 RH25 RH50
A
B ± 0.2
D ± 0.2
28.5 ± 1.5
12.5
11.3
35 ± 1.5
15.9
14
49 ± 1.3
19.8
18.3
70.2 ± 1.4
21.4
39.7
E ± 0.5
F
16.3
6.8 ± 1.5
19
7.9 ± 1.5
28
11.1 ± 1.5
50
11 ± 1.2
G ± 1
H ± 0.7
8.5
6.2
11
7.9
14
9.9
15.5
10.7
J ± 0.5
Ø K ± 0.1
16.4
2.4
20.6
2.4
27.5
3.2
29.4
3.2
L max.
M ± 0.5
8.9
4.3
11
5.6
15
8
15
8
N ± 0.3
Ø P min.
1.6
2.1
2
2.1
2.4
2.1
2.4
2.1
Q 25.3 ± 1.5 30.6 ± 1.5 44.6 ± 1.3 66.5 ± 1.4
Weight in g 3 8.8 16.5 30.8
ELECTRICAL SPECIFICATIONS
VISHAY SFERNICE MODEL AND STYLE RH5 RH10 RH25 RH50
NF C 83-210 (CECC 40 203) RE4 RE1 RE2 RE3
Power Rating
Chassis Mounted Resistors
MIL
Limits
25 °C 5 W 10 W 20 W 30 W
70 °C 4 W 8 W 16 W 24 W
413 cm
2
for RH5 and RH10
536 cm
2
for RH25 and RH50
VISHAY SFERNICE
Limits
25 °C 10 W 12.5 W 25 W 50 W
70 °C 8 W 10 W 20 W 40 W
Unmounted Resistors
VISHAY SFERNICE
Limits
25 °C 4 W 6 W 9W 12 W
70 °C 3.2 W 4.8 W 7.2 W 9.6 W
Rated Maximum Voltage (VRMS) 160 V 250 V 550 V 1285 V
Dielectric Strength VRMS 1000 V 1500 V 2500 V 2500 V
Ohmic Range VISHAY SFERNICE
0.01 Ω
12 kΩ
0.006 Ω
20 kΩ
0.006 Ω
62 kΩ
0.006 Ω
130 kΩ
Qualified Ohmic Range NF C 83-210
0.1 Ω
2.7 kΩ
0.1 Ω
4.99 kΩ
0.1 Ω
11.8 kΩ
0.1 Ω
33.2 kΩ
Minimum Ohmic Values
in Relation
to Tolerance
E 96 ± 0.1 % 1 Ω 1 Ω
E 96 ± 0.5 % 0.1 Ω 0.1 Ω
E 96 ± 1 % 0.1 Ω 0.05 Ω
E 48 ± 2 % 0.01 Ω 0.01 Ω
E 24 ± 5 % 0.01 Ω 0.01 Ω
E 12 ± 10 % 0.01 Ω 0.008 Ω 0.006 Ω