Cement type resistors SQP Features: 1.Good heat-durability, low temperature coefficient, low noise, high load power, high insulating capacity. 2.Operating ambient temperature :-55℃~+275℃ 3.Resistance tolerance: ±1%,±2%,±5%,±10%.
Cement type resistors SQP
Products | Cement type resistors SQP | ||||||||||||||||||||||
Features | 1.Good heat-durability, low temperature coefficient, low noise, high load power, high insulating capacity. | ||||||||||||||||||||||
Specifications | |||||||||||||||||||||||
Part NO. | Dimensions | Resistance range | |||||||||||||||||||||
W±1 | H±1 | L±1.5 | C±3 | D±0.05 | KN | MO | |||||||||||||||||
2W | 7 | 7 | 18 | 30 | 0.8 | 0.1~270 | 271~33K | ||||||||||||||||
3W | 8 | 8 | 22 | 35 | 0.8 | 0.1~1K | 1K1~47K | ||||||||||||||||
5W | 10 | 9 | 22 | 35 | 0.8 | 0.1~1K | 1K1~68K | ||||||||||||||||
7W | 10 | 9 | 35 | 35 | 0.8 | 0.1~1K | 1K1~68K | ||||||||||||||||
10W | 10 | 9 | 48 | 33 | 0.8 | 0.1~1K | 1K1~50K | ||||||||||||||||
15W | 12.5 | 11.5 | 48 | 33 | 0.8 | 0.1~1K | 1K1~150K | ||||||||||||||||
20W~25W | 14 | 13.5 | 60 | 33 | 0.8 | 0.1~1K | 1K1~150K | ||||||||||||||||
Power rated | 2W | 3W | 5W | 7W | 10W | 15W | 20W~25W | ||||||||||||||||
Max working voltage | 150V | 350V | 350V | 500V | 750V | 1000V | 100V | ||||||||||||||||
Dielectric withstanding voltage | 1000V | 1000V | 1000V | 1000V | 1000V | 1000V | 1000V | ||||||||||||||||
Resistance tolerance | J±5% | J±5% | J±5% | J±5% | J±5% | J±5% | J±5% | ||||||||||||||||
Cement Type Resistor (wire wound) | |||||||||||||||||||||||
Characteristics | Specifications | Test Method | |||||||||||||||||||||
DC ResistanceJIS-C-5202 5.1 | J ± 5% | At 25℃ | |||||||||||||||||||||
Dielectric withstanding voltage | No evidence of flashover mechanical amage, arcing or insulation breakdown. | Resistance shall be clamped with a conductive material which conforms to resistors surface so that 90o of the outer periphery is contacted a potential of 1000V AC shall be applied for 60 seconds. | |||||||||||||||||||||
Insulation Resistance | 1000MΩ MIN | Withstanding test and shall be measured at DC 500V. Resistor shall be prepared AC same method of dielectric. | |||||||||||||||||||||
Thermal Shock | ΔR≤±(2%R0+0.1Ω) | After application of rated power for 30 minutes, 30 minutes exposure to -30±5℃ ambient temperature. | |||||||||||||||||||||
Humidity | ΔR≤±(2%R0+0.1Ω) | Temperature resistance change after 1000 hours exposure in a humidity test chamber controlled at 40±2℃ and 90~95% relative humidity. | |||||||||||||||||||||
Cement Type Resistor (metal oxide film) | |||||||||||||||||||||||
Short time overload | ΔR≤±(2%R0+0.05Ω) | Temperature resistance change after the application of a potential of 2.5 times RCVW for 5 seconds. | |||||||||||||||||||||
Load Life | ΔR≤±(5%R0+0.1Ω) | Permanent resistance change after 1000 hours operating at RCWV, with duty cycle of 1.5 hours on and 0.5 hours off at 25℃±2℃. | |||||||||||||||||||||
Load Life in Humidity | ΔR≤±(5%R0+0.1Ω) | Temperature resistance change after 1000 hours(1.5hours on and 0.5 hours off) at RCVW in a humidity chamber controlled at 40±2℃ and 90~95% relative humidity. | |||||||||||||||||||||
Solderability | 95% coverage MIN | Test temperature of solder:230±5℃ | |||||||||||||||||||||
Humidity | ΔR≤±(5%R0+0.1Ω) | Temperature resistance change after 1000 hours exposure in a humidity test chamber controlled at 40±2℃ and 90~95% relative humidity. | |||||||||||||||||||||
Resistance to Soldering Heat | ΔR≤±(1%R0+0.05Ω) | Immerge into the 350±10°C tin stove by3.2~4.8
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Nonflammability | Nonflammable | Load 5 min according to 5times, 10 times, 16 times rated power and A.C. respectively. | |||||||||||||||||||||
Notes | More details, please feel free to contact us. |
Derating Curve of Cement Type Resistors SQP:
For resistors operated in ambient temperatures above 70 ℃,power rating must be derated in accordance with the curve below.
Surface Temperature Rise of Cement Type Resistors SQP: