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Specifications
Resistance:
4.7Ω
Power(Watts):
200W
Tolerance:
±10%
Mfr. Part #:
RSSD25168A4R70KB00
Package:
Through Hole
Key Attributes
Model Number:
RSSD25168A4R70KB00
Product Description
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 requirements and can be adjusted via collars for flexible configuration. With high power ratings, excellent thermal shock resistance, and robust mechanical strength, they are ideal for industrial power applications.
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: for definitions of compliance please see www.vishay.com/doc?99912
Technical Specifications
| Model Size | Resistance Range | Rated Power P25 C W | Tolerance % | 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 | 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 | 2 % or 0.05 | 1 % |
| Load Life | 90 / 30 cycle 1000 h at Pr at +25 C | 5 % | 5 % |
Dimensions (mm)
| Series | A 2 | B MAX. | C MIN. | D E F | G - 4 - 0 | H - 4 - 0 | J | K 0.5 | L 0.5 | M 0.5 | P | Q R | Z APPROX. |
| RSSD 8 x 34 | 34 | 10 | 4.1 | 27 2 | 20 0.5 | 5 | 28 1 | 3.2 | 16 0.5 | 1 | 10 | 10 | |
| RSSD 10 x 50 | 50 | 11.5 | 5 | 40 2 | 22 0.5 | 6.35 | 31 1 | 4.2 | 18 0.5 | 1.5 | 22 | 22 | |
| RSSD 13 x 70 | 70 | 14.5 | 6.7 | 56 2 | 24 0.5 | 6.35 | 34 1 | 4.2 | 20 0.5 | 3.5 | 38 | 38 | |
| RSSD 16 x 94 | 94 | 18 | 9.2 | 78 2 | 26.5 0.5 | 6.35 | 38 1 | 4.2 | 21 0.5 | 4 | 55 | 55 | |
| RSSD 20 x 117 | 117 | 22 | 12.6 | 98 2 | 31 0.7 | 6.35 | 42 1 | 4.2 | 24 0.7 | 5 | 80 | 80 | |
| RSSD 25 x 138 | 138 | 27 | 16.4 | 117 2 | 33.5 1 | 9 | 199 | 169 | 50 1.5 | 5.7 | 28.5 1 | 6 | 90 |
| RSSD 25 x 168 | 168 | 27 | 16.4 | 147 2 | 33.5 1 | 9 | 229 | 199 | 50 1.5 | 5.7 | 28.5 1 | 6 | 115 |
| RSSD 30 x 250 | 250 | 32 | 21.3 | 227 2.5 | 36 1 | 13 | 317 | 287 | 60 1.5 | 5.7 | 31 1 | 5 | 240 |
| RSSD 40 x 370 | 370 | 43 | 22.3 | 332 3 | 57 1.5 | 18 | 432 | 405 | 81.5 max. | 9.2 | 45 1.5 | 10 | 845 |
| RSSD 50 x 373 | 373 | 53 | 27.1 | 332 3 | 63 1.5 | 18 | 432 | 405 | 92.5 max. | 9.2 | 51 1.5 | 11.5 | 1270 |
2412091029_VISHAY-RSSD25168A4R70KB00_C17694299.pdf
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