Ningbo Anyo Import & Export Co., Ltd.
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Clamp Mounting Type Cement Ceramic Wirewound Power Resistors SQH
Description:
Cement resistors are manufactured by winding the ceramic rods with metal alloy resistance wire and put it into a fireproof ceramic box then concrete with non-flammable and heat-resistant cement.
Feature:
• Heat and flame resistant!
• The completely insulated characteristic is suitable for printed circuit board.
• For high resistance value, the winding core will be replaced by metal oxide film cutting core.
• High voltage type and non-inductive type are available on request!
Specification:
| Test item | Specification |
| Tolerances | ±5%, ±10% |
| Temperature coefficient | ±250ppm/℃ |
| Insulation voltage | 700V |
| Insulation resistance | >1GMΩ |
| Climatic category | 55/155/21 |
| Temperature range | -55~275℃ |
| Load life | ΔR<= ± ( 5% R + 0.1Ω) |
| Damp heat, steady | ΔR<= ± ( 5% R + 0.1Ω) |
| Terminal tensile strength | ΔR<= ± ( 1% R + 0.05Ω) |
| Resistance to sold, heat | ΔR<= ± ( 1% R + 0.05Ω) |
| Solder ability | IEC68 –2–20(1968) ,235℃ ± 5℃,2 ± 0.5s (solder bath method) |
Dimension:
| Type | Rated watts | Dimensions (mm) ±1.5mm | Resistance Range (OHM) | ||||
| W | L | P | H | Wirewound | RS | ||
| SQH-10 | 10W | 10 | 48 | 30 | 18 | 0.10~200Ω | 200~50KΩ |
| SQH-15 | 15W | 12.5 | 48 | 32 | 21 | 1~250Ω | 250~150KΩ |
| SQH-20 | 20W | 12.5 | 63 | 45±2 | 21 | 1~270Ω | 270~150KΩ |
| SQH-30 | 30W | 19 | 75 | 56±2 | 32 | 2~310Ω | 310~1KΩ |
| SQH-40 | 40W | 19 | 90 | 70±2 | 32 | 3~350Ω | 350~2KΩ |