RH
www.vishay.com
Vishay Sfernice
Heatsink Encased Wirewound Power Resistors
FEATURES
5 W to 50 W at 25 C
NF C 83-210
According to CECC 40 203
High stability < 0.05 % year
Low temperature coefficient typically 15 ppm/C
Wide range of values from 0.006 to 130 k
Termination = Sn/Ag/Cu
Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
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).
NF F 16101, 10/1988 and 16102, 04/1992: Not applicable (our parts contain less than 10 g of combustible materials).
DIMENSIONS in millimeters
RH
M
A
F
D
N
2
H
G
J B
K
P L
E
Q
B D E H J K L M N P WEIGHT
SERIES A F G 1 Q
0.2 0.2 0.5 0.7 0.5 0.1 MAX. 0.5 0.3 MIN. g
RH5 28.5 1.5 12.5 11.3 16.3 6.8 1.5 8.5 6.2 16.4 2.4 8.9 4.3 1.6 2.1 25.3 1.5 4
RH10 35.5 1.5 15.9 14 19 7.9 1.5 11 7.9 20.6 2.4 11 5.6 2 2.1 30.6 1.5 6.4
RH25 49 1.3 19.8 18.3 28 11.1 1.5 14 9.9 27.5 3.2 15 8 2.4 2.1 44.6 1.3 16.1
RH50 70.2 1.4 21.4 39.7 50 11 1.2 14 10.7 29.4 3.2 15 8 2.4 2.1 66.5 1.4 28.6
OHMIC RANGE IN RELATION TO TOLERANCE
RH5 RH10 RH25 RH50
10 % E24 0.01 to 12 k 0.006 to 20 k 0.006 to 62 k 0.006 to 130 k
5 % E24 0.01 to 12 k 0.01 to 20 k 0.01 to 62 k 0.01 to 130 k
2 % E48 0.01 to 12 k 0.01 to 20 k 0.01 to 62 k 0.01 to 130 k
1 % E96 0.1 to 12 k 0.1 to 20 k 0.05 to 62 k 0.05 to 130 k
0.5 % E96 0.1 to 12 k 0.1 to 20 k 0.1 to 62 k 0.1 to 130 k
Revision: 07-Dec-15 Document Number: 50013
1
For technical questions, contact: sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
RH
www.vishay.com
Vishay Sfernice
STANDARD ELECTRICAL SPECIFICATIONS
RATED POWER RESISTANCE TEMPERATURE
VOLTAGE LIMIT TOLERANCE
MODEL P RANGE COEFFICIENT
25 C
V %
RMS
W ppm/C
10 2, 5, 10 0.01 to 12K
RH5 160
10 0.5, 1 0.1 to 12K
12.5 10 0.006 to 20K
RH10 12.5 250 2, 5 0.01 to 20K
12.5 0.5, 1 0.1 to 20K
25 10 0.006 to 62K
< 5 100,
25 2, 5 0.01 to 62K 5 to 10 50,
RH25 550
> 10 25
25 1 0.05 to 62K
25 0.5 0.1 to 62K
50 10 0.006 to 130K
50 2, 5 0.01 to 130K
RH50 1285
50 1 0.05 to 130K
50 0.5 0.1 to 130K
TECHNICAL SPECIFICATIONS
VISHAY SFERNICE MODEL AND STYLE RH5 RH10 RH25 RH50
25 C 5 W 10 W 20 W 30 W
Power Rating MIL
Chassis Mounted Resistors Limits
70 C 4 W 8 W 16 W 24 W
2
25 C 10 W 12.5 W 25 W 50 W
413 cm for RH5 and RH10 Vishay Sfernice
2
536 cm for RH25 and RH50 Limits
70 C 8 W 10 W 20 W 40 W
25 C 4 W 6 W 9 W 12 W
Vishay Sfernice
Unmounted Resistors
Limits
70 C 3.2 W 4.8 W 7.2 W 9.6 W
Rated Maximum Voltage (V ) 160 V 250 V 550 V 1285 V
RMS
Dielectric Strength V 1000 V 1500 V 2500 V 2500 V
RMS
PERFORMANCE
MIL-R-18546 D NF C 83-210
TYPICAL DRIFTS
TESTS CONDITIONS REQUIREMENTS
Operating Temperature Range -55 C +200 C - -
Momentary Overload 5 P /5 s (0.25 % + 0.05 ) (0.1 % + 0.05 )
r
-55 C +200 C
Climatic Sequence (0.25 % + 0.05 ) (0.1 % + 0.05 )
5 cycles
Load Life Test at High (1 % + 0.05 )
2 h at +275 C (0.1 % + 0.05 )
Temperature Ins. resistance 1 G
(1 % + 0.05)
Humidity (Steady State) 56 days (0.5 % + 0.05 )
Ins. resistance 100 M
Climatic sequences test, with load
Resistance to Moisture (1 % + 0.05 ) (0.5 % + 0.05 )
and polarisation
5 to 10 50 ppm/C
Temperature Coefficient 15 ppm/C
> 10 25 ppm/C
1000 h 25 C P MIL Vishay (1 % + 0.05 ) (0.1 % + 0.05 )
Load Life n
at Maximum Temperature
200 C 30 % of P Sfernice Ins. resistance 1 G (0.5 % + 0.05 )
n
Revision: 07-Dec-15 Document Number: 50013
2
For technical questions, contact: sferfixedresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000