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40W Power Ribbon Wirewound Resistor

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Technical Parameters
Rated voltage Rated power (W) × nominal resistance (Ω) Vdc
Max. voltage 600V
Max. overload voltage 1000V
Tolerance K(±10%)
Resistance range 390R
Operating temperature range ±70℃


Performance Specifications
Item Requirements Test method
Surface temperature rise TCR≤ 275ppm/℃ At rated power (PR)
Short-time overload ΔR/R≤±(1% 0.05Ω), legible markings, no visible damage The applied voltage is the lower one between 10 times rated voltage and the max. overload voltage, and the time is 5 seconds.
Dielectric withstanding voltage No flashover or insulation breakdown The peak value for AC is 1000V, and time duration is 1 minute.
Resistance to vibration ΔR/R≤±(1% 0.05Ω), no visible damage 2 hours of 10~500Hz for 3 directions each
Resistance to soldering heat ΔR/R≤±(1% 0.05Ω), legible markings, no visible damage 350±10℃, 3.5±0.5s
Temperature cycling ΔR/R≤±(2% 0.05Ω), no visible damage -70℃ /15℃/70℃ /15℃ for consecutive 5 cycles
Damp heat, steady state ΔR/R≤±(2% 0.05Ω), no visible damage 40℃ , 95%RH, 1344 hours
Load life at 70℃ ΔR/R≤±(5% 0.1Ω), legible markings, no visible damage Room temperature, rated power,1000 hours


Related Names
Variable Resistor | Chassis Mount Resistor | HV Resistor

40W Power Ribbon Wirewound Resistor
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Links：https://www.globefindpro.com/products/85694.html
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