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 are particularly suited for low ohmic value applications and can be tapped using adjustable collars for flexible configuration. Ideal for industrial environments requiring robust and stable performance.
Product Attributes
- Brand: Vishay Sfernice
- Material: Stainless Steel 304 L (Collars)
- Mechanical Protection: Vishay Sfernice special cement
- Resistive Element: Nickel alloy wire
- Certifications: NF F 16101, 10/1988 and 16102, 04/1992: Not applicable
- Material Categorization: For definitions of compliance see www.vishay.com/doc?99912
Technical Specifications
| Model Size | Resistance Range | Rated Power P25C 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 to +450 | -55 / +200 / 56 days |
| RSSD 10 x 50 | 0.12 to 22 | 25 | 5, 10, 20 | 22 | -55 to +450 | -55 / +200 / 56 days |
| RSSD 13 x 70 | 0.12 to 43 | 42 | 5, 10, 20 | 38 | -55 to +450 | -55 / +200 / 56 days |
| RSSD 16 x 94 | 0.33 to 75 | 70 | 5, 10, 20 | 55 | -55 to +450 | -55 / +200 / 56 days |
| RSSD 20 x 117 | 0.22 to 100 | 100 | 5, 10, 20 | 80 | -55 to +450 | -55 / +200 / 56 days |
| RSSD 25 x 138 | 0.10 to 150 | 140 | 5, 10, 20 | 90 | -55 to +450 | -55 / +200 / 56 days |
| RSSD 25 x 168 | 0.12 to 220 | 200 | 5, 10, 20 | 115 | -55 to +450 | -55 / +200 / 56 days |
| RSSD 30 x 250 | 0.22 to 360 | 280 | 5, 10, 20 | 240 | -55 to +450 | -55 / +200 / 56 days |
| RSSD 40 x 370 | 0.47 to 470 | 450 | 5, 10, 20 | 845 | -55 to +450 | -55 / +200 / 56 days |
| RSSD 50 x 373 | 0.68 to 560 | 600 | 5, 10, 20 | 1270 | -55 to +450 | -55 / +200 / 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-RSSD50373C22R0JB01_C17668461.pdf
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