Instruction Manual

RSO
Fixed Wirewound Enamelled Corrugated Tape Resistors
Very High Dissipation
Vishay Sfernice
Document Number: 50018 For technical questions, contact: [e-mail]
www.vishay.com
Revision: 18-Dec-06 65
MECHANICAL SPECIFICATIONS
Mechanical Protection enamel
Resistive Element Ni-Cr wire
Connections
AN CS supporting collars
Average Unit Weight 160 to 1455 g
ENVIRONMENTAL SPECIFICATIONS
Temperature Limits - 55 °C + 450 °C
Climatic Category
- 55 °C/+ 200 °C/56 days
RECOMMENDATIONS FOR USE
OVERLOAD:
The RSO resistors are capable of withstanding overloads of about 10 Pr for a maximum period of 5 seconds; they can resist
momentarily even greater overloads.
Particular requirements should be submitted to Vishay Sfernice.
ELECTRICAL SPECIFICATIONS
Resistance Range
0.068 Ω to 68 MΩ
(E12 preferred series)
Standard Resistance Tolerance
Rn ≥ 1 Ω ± 5 %
Rn < 1 Ω ± 10 %
Power Rating 160 W to 1 kW at 25 °C
Temperature Coefficient 180 ppm/°C Typical
PERFORMANCE
TESTS CONDITIONS REQUIREMENTS TYPICAL VALUES AND DRIFTS
Short Time Overload 10 Pr during 5 s 2 % or 0.05 Ω 1 %
Thermal Shock
Load at Pr
followed by cold
temp. exposure at - 55 °C/15 sec
2 % or 0.05 Ω 1 %
Climatic Sequence
Phase A: + 200°
Phase C: - 55°
Phase D: 5 cycles
3 % or 0.05 Ω 1 %
Load Life
90/30' cycle
1000 h at Pr 25 °C
5 % 2 %
SPECIAL FEATURES
RSO STYLE 25 x 138 25 x 168 30 x 250 40 x 370 50 x 373
Power Rating at 25 °C 160 W 200 W 350 W 700 W 1000 W
Resistance Ohmic Range
(E12 Series)
0.068 Ω
12 Ω
0.10 Ω
18 Ω
0.22 Ω
33 Ω
0.33 Ω
56 Ω
0.39 Ω
68 Ω