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Specifications
Resistance:
33Ω
Power(Watts):
140W
Tolerance:
±5%
Mfr. Part #:
RSSD25138C33R0JB04
Package:
Through Hole
Key Attributes
Model Number:
RSSD25138C33R0JB04
Product Description
Product Overview
The Vishay Sfernice RSSD series offers industrial high-power vitreous tubular wirewound resistors with adjustable capabilities. Designed for demanding applications, these resistors provide high power ratings from 16 W to 600 W at 25 C, excellent withstanding of thermal shock, and robust mechanical strength. They are particularly noted for their ability to withstand heavy transient and severe shock and vibration conditions, complementing lower ohmic values. Standard RSSD resistors feature a single adjustable collar for tapping, with options for multiple tappings on larger models.
Product Attributes
- Brand: Vishay Sfernice
- Material: WELDED STAINLESS STEEL 304 L COLLARS, SCREWED STAINLESS STEEL 304 L COLLARS
- Resistive Element: Nickel alloy wire
- Mechanical Protection: Vishay Sfernice special cement
- Certifications: NF F 16101, 10/1988 and 16102, 04/1992: Not applicable
- Material Categorization: Refer to www.vishay.com/doc?99912 for compliance definitions.
Technical Specifications
| Model | Size | Resistance Range () | Rated Power P25 C (W) | Tolerance (%) | Approx. Average Unit Weight (g) | Dimensions (mm) L x | Max. Number of Additional Tapping | Reduction % of Ohmic Value by Tapping |
| RSSD 8 x 34 | 0834 | 0.12 to 10 | 16 | 5, 10, 20 | 10 | 34 x 8 | 0 | 23 |
| RSSD 10 x 50 | 1050 | 0.12 to 22 | 25 | 5, 10, 20 | 22 | 50 x 10 | 1 | 21 |
| RSSD 13 x 70 | 1370 | 0.12 to 43 | 42 | 5, 10, 20 | 38 | 70 x 13 | 1 | 14 |
| RSSD 16 x 94 | 1694 | 0.33 to 75 | 70 | 5, 10, 20 | 55 | 94 x 16 | 1 | 11 |
| RSSD 20 x 117 | 20117 | 0.22 to 100 | 100 | 5, 10, 20 | 80 | 117 x 20 | 1 | 10 |
| RSSD 25 x 138 | 25138 | 0.10 to 150 | 140 | 5, 10, 20 | 90 | 138 x 25 | 1 | 8 |
| RSSD 25 x 168 | 25168 | 0.12 to 220 | 200 | 5, 10, 20 | 115 | 168 x 25 | 2 | 6.5 |
| RSSD 30 x 250 | 30250 | 0.22 to 360 | 280 | 5, 10, 20 | 240 | 250 x 30 | 2 | 6 |
| RSSD 40 x 370 | 40370 | 0.47 to 470 | 450 | 5, 10, 20 | 845 | 370 x 40 | 4 | 5.7 |
| RSSD 50 x 373 | 50373 | 0.68 to 560 | 600 | 5, 10, 20 | 1270 | 373 x 50 | 4 | 5.7 |
Performance Tests
| Test | Conditions | Requirements | Typical Values and Drifts |
| Short Time Overload | 10 Pr during 5 s | 2 % | 1 % |
| Climatic Sequence | -55 C, +200 C, 5 cycles | 3 % | 1 % |
| Thermal Shock | Load at 100 % Pr followed by cold -55 C / 15 min | 2 % or 0.05 | 1 % |
| Load Life | 90 / 30 cycle, 1000 h at Pr at +25 C | 5 % | 5 % |
Environmental Specifications
| Parameter | Value |
| Temperature Range | -55 C to +450 C |
| Climatic Category | -55 C / +200 C / 56 days |
2412091029_VISHAY-RSSD25138C33R0JB04_C17694403.pdf
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