Electronics and Communication Engineering - Analog Electronics - Discussion

Discussion Forum : Analog Electronics - Section 3 (Q.No. 46)
46.
A transistor has a power rating of 8 W for a case temperature of 25°C. If derating factor is 30 mW/°C, the power rating for 55°C, case temperature is
8 W
7.5 W
7.1 W
6.8 W
Answer: Option
Explanation:

Power rating = 8 - (55 - 25)(30 x 10-3) = 7.1 W.

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