The total thermal resistance of a power transistor and heat sink is 20 – McqOptions

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1.	The total thermal resistance of a power transistor and heat sink is 20 C/W. The ambient temperature is 25 C and (T_J)MAX=200 C. If V_CE=4V, find the maximum collector current that the transistor can carry without destruction. What will be the allowed value of collector current if ambient temperature rises to 75 C?
A.	3.67A
B.	7.56A
C.	2.19A
D.	1.56A
Answer» E.

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