Cement type resistors IV Features: 1. Small dimension, excellent stability in high temperature,resistant to humidity and shock. 2. Completely insulated character suitable for printed circuit board. 3. Super heat dissipation small linear temperature coefficient. 4. Instant overload capability low noise figures and low annual shift on resistance values. 5.Operating ambient temperature:-55℃~+275℃ 6.Resistance tolerance: ±1%,±2%,±5%,±10%.
Cement type resistors IV
Products | Cement type resistors IV |
Features | 1. Small dimension, excellent stability in high temperature,resistant to humidity and shock. 2. Completely insulated character suitable for printed circuit board. 3. Super heat dissipation small linear temperature coefficient. 4. Instant overload capability low noise figures and low annual shift on resistance values. 5.Operating ambient temperature:-55℃~+275℃ |
Specifications of Cement Type Resistors IV :
PART NO | (MM) DIMENSIONS (MM) | RESISTANCE RANGE (Q ) | |||||
W±1 | H±1 | L±2 | E+0.2 | F±1 | KN | MO | |
5W | 10 | 11.0 | 34 | 1.5 | 4.5 | 0.1-270 | 271-10K |
7W | 10 | 11.0 | 48 | 1.5 | 4.5 | 0.1-1K | 1K1-50K |
10W | 10 | 11.0 | 60 | 1.5 | 4.5 | 0.1-1K | 1K1-50K |
15W | 12.5 | 13.5 | 60 | 2.5 | 4.5 | 0.1-1K | 1K1~50K |
20W | 12.5 | 15.0 | 75 | 2.5 | 4.5 | 0.1-1K | 1K1-75K |
Power rated | 5W | 7W | 10W | 15W | 20W |
Max working voltage | 350V | 500V | 750V | 1000V | 1000V |
Dielectric withstanding voltage | 1000V | 1000V | 1000V | 1000V | 1000V |
Resistance tolerance | 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
| ||||||
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 IV :
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 IV :
