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 suitable for low ohmic value applications and can be tapped using adjustable collars for flexible configuration. Key advantages include high power ratings, excellent thermal shock resistance, mechanical strength, and fire-proof construction.
| 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 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 |