Product Overview
The Vishay Sfernice RSSD series offers industrial high-power, vitreous tubular wirewound resistors designed for demanding applications. These resistors are characterized by their ability to withstand heavy transient loads, severe shock, and vibration. They are particularly suited for low ohmic value requirements and can be adjusted using collars for flexible application. The RSSD series is known for its high long-term stability, excellent thermal shock resistance, mechanical strength, and fire-proof properties.
Product Attributes
- Brand: Vishay Sfernice
- Material: WELDED STAINLESS STEEL 304 L (collars), SCREWED STAINLESS STEEL 304 L (collars)
- 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 |
| RSSD 8 x 34 | 0.12 to 10 | 16 | 5, 10, 20 | 10 |
| RSSD 10 x 50 | 0.12 to 22 | 25 | 5, 10, 20 | 22 |
| RSSD 13 x 70 | 0.12 to 43 | 42 | 5, 10, 20 | 38 |
| RSSD 16 x 94 | 0.33 to 75 | 70 | 5, 10, 20 | 55 |
| RSSD 20 x 117 | 0.22 to 100 | 100 | 5, 10, 20 | 80 |
| RSSD 25 x 138 | 0.10 to 150 | 140 | 5, 10, 20 | 90 |
| RSSD 25 x 168 | 0.12 to 220 | 200 | 5, 10, 20 | 115 |
| RSSD 30 x 250 | 0.22 to 360 | 280 | 5, 10, 20 | 240 |
| RSSD 40 x 370 | 0.47 to 470 | 450 | 5, 10, 20 | 845 |
| RSSD 50 x 373 | 0.68 to 560 | 600 | 5, 10, 20 | 1270 |
Performance Tests
| Test Condition | Requirement | Typical Value |
| 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 % |
Ordering Information Example
RSSD 10 50 AN 10U 5 % BA25
GLOBAL PART NUMBER EXAMPLE: RSSD 08 x 34 A R 15 J B15
2412091029_VISHAY-RSSD25168C82R0JB04_C17688245.pdf
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