Vishay Sfernice RSSD Series: Wirewound Resistors, Industrial High Power, Vitreous Tubular, Adjustable, Low Values
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 and severe shock and vibration conditions, making them suitable for industrial environments. They complement lower ohmic value ranges and can be tapped using adjustable collars for flexible application. Key advantages include high power ratings, excellent thermal shock resistance, mechanical strength, and fire-proof construction.
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
Technical Specifications
| Model | Size | Resistance Range | Rated Power P25 C W | Tolerance % | Approx. Average Unit Weight g | Temperature Range C |
| RSSD 8 x 34 | 0834 | 0.12 to 10 | 16 | 5, 10, 20 | 10 | -55 to +450 |
| RSSD 10 x 50 | 1050 | 0.12 to 22 | 25 | 5, 10, 20 | 22 | -55 to +450 |
| RSSD 13 x 70 | 1370 | 0.12 to 43 | 42 | 5, 10, 20 | 38 | -55 to +450 |
| RSSD 16 x 94 | 1694 | 0.33 to 75 | 70 | 5, 10, 20 | 55 | -55 to +450 |
| RSSD 20 x 117 | 20117 | 0.22 to 100 | 100 | 5, 10, 20 | 80 | -55 to +450 |
| RSSD 25 x 138 | 25138 | 0.10 to 150 | 140 | 5, 10, 20 | 90 | -55 to +450 |
| RSSD 25 x 168 | 25168 | 0.12 to 220 | 200 | 5, 10, 20 | 115 | -55 to +450 |
| RSSD 30 x 250 | 30250 | 0.22 to 360 | 280 | 5, 10, 20 | 240 | -55 to +450 |
| RSSD 40 x 370 | 40370 | 0.47 to 470 | 450 | 5, 10, 20 | 845 | -55 to +450 |
| RSSD 50 x 373 | 50373 | 0.68 to 560 | 600 | 5, 10, 20 | 1270 | -55 to +450 |
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-RSSD50373C56R0JB01_C17699579.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible