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 conditions, severe shock, and vibration. They feature adjustable collars for tapping, providing flexibility in ohmic range and performance. Ideal for applications requiring high power dissipation, long-term stability, and excellent thermal shock resistance.
Product Attributes
- Brand: Vishay Sfernice
- Material: WELDED STAINLESS STEEL 304 L COLLARS, SCREWED STAINLESS STEEL 304 L COLLARS
- Material Categorization: Refer to www.vishay.com/doc?99912 for compliance definitions.
- Certifications: NF F 16101, 10/1988 and 16102, 04/1992: Not applicable (parts are made of metallic and refractory materials).
Technical Specifications
| Model Size | Resistance Range | Rated Power P25 C W | Tolerance % | Approx. Average Unit Weight g | Temperature Range C | Climatic Category |
| RSSD 8 x 34 | 0.12 to 10 | 16 | 5, 10, 20 | 10 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 10 x 50 | 0.12 to 22 | 25 | 5, 10, 20 | 22 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 13 x 70 | 0.12 to 43 | 42 | 5, 10, 20 | 38 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 16 x 94 | 0.33 to 75 | 70 | 5, 10, 20 | 55 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 20 x 117 | 0.22 to 100 | 100 | 5, 10, 20 | 80 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 25 x 138 | 0.10 to 150 | 140 | 5, 10, 20 | 90 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 25 x 168 | 0.12 to 220 | 200 | 5, 10, 20 | 115 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 30 x 250 | 0.22 to 360 | 280 | 5, 10, 20 | 240 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 40 x 370 | 0.47 to 470 | 450 | 5, 10, 20 | 845 | -55 C, +450 C | -55 C / +200 C / 56 days |
| RSSD 50 x 373 | 0.68 to 560 | 600 | 5, 10, 20 | 1270 | -55 C, +450 C | -55 C / +200 C / 56 days |
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 % |
2412091029_VISHAY-RSSD10X50A10R0JS06_C17673230.pdf
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