RSO
Vishay Sfernice
www.vishay.com
DIMENSIONS in millimeters
F
+ 0.5
+ 0
RSO
Ø B
MAX.
Ø C
MIN.
D
MAX.
G
H
CONNECTIONS
SERIES
A
2
E
J
- 4 / + 0
- 4 / + 0
25 x 138
25 x 168
30 x 250
40 x 370
50 x 373
AN type 1 CS type 1
AN type 1 CS type 1
AN type 1 CS type 1
AN type 2 CS type 2
AN type 2 CS type 2
138
39
39
12.6
12.6
17.4
22.3
27.1
54
54
33.5
1
1
9
199
229
317
432
432
169
199
287
405
405
50 1.5
50 1.5
60 1.5
73.8
168
250
370
373
33.5
36
9
44
62
1
13
18
18
54.5
65
85.5
97
57 1.5
63 1.5
79
AVERAGE UNIT
WEIGHT IN g
RSO
CONNECTIONS
K
L + 0.5
M
0.5
P
Q
R
Z
SERIES
AN
160
190
350
960
1375
CS
205
25 x 138
25 x 168
30 x 250
40 x 370
50 x 373
AN type 1 CS type 1 27
AN type 1 CS type 1 27
AN type 1 CS type 1 30
1
1
1
6.5
6.5
9
24
24
25
30
30
117
147
2
2
5.7
5.7
5.7
9.2
9.2
28.5
1
1
6
6
28.5
31
235
227 2.5
1
5
400
AN type 2 CS type 2 45 1.5
AN type 2 CS type 2 45 1.5
9
332
332
3
3
45 1.5
51 1.5
10
11.5
1040
1455
9
STANDARD ELECTRICAL SPECIFICATIONS
RATED POWER
RESISTANCE RANGE
TOLERANCE
ꢀ
MODEL
SIZE
P25 °C
W
RSO 25 x 138
RSO 25 x 168
RSO 30 x 250
RSO 40 x 370
RSO 50 x 373
25138
25168
30250
40370
50373
0.068 to 12
0.10 to 18
0.22 to 33
0.33 to 56
0.39 to 68
160
200
350
700
1000
10
10
10
10
10
MECHANICAL SPECIFICATIONS
TECHNICAL SPECIFICATIONS
Mechanical Protection
Resistive Element
Connections
Enamel
0.068 to 68
Resistance Range
(E12 preferred series)
Ni-Cr wire
Rn 1 5 ꢀ
Rn < 1 10 ꢀ
AN CS supporting collars
160 g to 1455 g
Standard Resistance Tolerance
Power Rating
Average Unit Weight
160 W to 1 kW at 25 °C
ENVIRONMENTAL SPECIFICATIONS
Temperature Range
-55 °C, +450 °C
Climatic Category
-55 °C / +200 °C / 56 days
PERFORMANCE
TESTS
CONDITIONS
REQUIREMENTS
TYPICAL VALUES AND DRIFTS
Short Time Overload
10 Pr during 5 s
2 ꢀ or 0.05
1 ꢀ
Load at Pr followed by cold
temp. exposure at -55 °C / 15 s
Thermal Shock
Climatic Sequence
Load Life
2 ꢀ or 0.05
3 ꢀ or 0.05
5 ꢀ
1 ꢀ
1 ꢀ
2 ꢀ
Phase A: +200°
Phase C: -55°
Phase D: 5 cycles
90' / 30' cycle
1000 h at Pr 25 °C
RECOMMENDATIONS FOR USE
OVERLOAD:
The RSO resistors are capable of withstanding overloads of about 10 Pr for a maximum period of 5 s; they can resist
momentarily even greater overloads.
Particular requirements should be submitted to Vishay Sfernice.
Revision: 16-Mar-16
Document Number: 50018
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