C2 Cement Fixed Resistors

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The cement fixed resistor is a kind of power wirewound resistors, and it covers fiberglass core, metal oxide element and ceramic case.

Characteristics

Test item	Requirements
Tolerance range	±5%(J), ±10%(K)
Temperature coefficient	±250ppm/℃, ±500ppm/℃
Insulation voltage	700V
Insulation resistance	>1GΩ
Climatic category (LCT/UCT/Days)	55/155/21
Temperature range	-55℃-275℃
Derating property	When ambient temperature rises from 70℃ to 275℃, the resistor’s allowable load drops from 100% to 0%.
Load life at rated power, 70℃, 1000hrs	ΔR/R≤±(5% 0.1Ω)
Resistance to damp heat at steady state, 40℃, 93%RH, 21d	ΔR/R≤±(5% 0.1Ω)
Terminal strength	ΔR/R≤±(1% 0.05Ω)
Resistance to soldering heat at 350℃, 3.5s	ΔR/R≤±(1% 0.05Ω)
Solderability	IEC68-2-20(1968), 235±5℃, 2±0.5s (solder bath method)

Related Names
Industrial Resistor | Feedback Resistor | Voltage Divider

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