5. Resistor Selection

Question.2

1/4-watt resistor (0.25W) has a derating curve that starts at shown below. (DigiKey Part No- CFP1/4CT52R102J).  Derating curve that starts at 70°C and drops linearly to 0W at 155°C.

What is the maximum power this resistor can safely dissipate at 100°C?

Chart of power rating vs temprature

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