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Identify Resistor Type and Wattage
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Topic: Identify Resistor Type and Wattage (Read 132 times)
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2X
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Identify Resistor Type and Wattage
«
on:
October 09, 2024, 09:04:45 pm »
Hi, I have the below resistor on a working power supply where I measured it 120Kohm and I would like to replace it for preventing reasons (the colors on the image don't show very good but they match with the measured 120Kohm value). I believe it is a metal film resistor but what watt do you believe is?
The voltage difference across the resistor is 293V and the current 2.4mA P=V*I293V*0.0024A~0.7W. What watt do you suggest to choose... for my designs always I choose the rating wattage to be the double from the working watt?
I found the below:
CPF3120K00FKE14
https://eu.mouser.com/ProductDetail/Vishay-Dale/CPF3120K00FKE14?qs=AgiByKCM3cCJwbXOor8fIg%3D%3D
Carbon Film Vs Metal Film Resistors
https://components101.com/articles/carbon-film-vs-metal-film-resistors
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Last Edit: October 09, 2024, 09:20:06 pm by 2X
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fzabkar
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Re: Identify Resistor Type and Wattage
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Reply #1 on:
Today
at 12:03:23 am »
Is this the startup resistor that powers the main PWM controller IC from the rectified mains? If so, then your replacement resistor is fine, although probably overkill for this application.
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