A silicon power transistor is operated with a heat sink HS-A=1.5 C/W. – McqOptions

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1.	A silicon power transistor is operated with a heat sink H_S-A=1.5 C/W. The transistor rated at 150W (25 C) has H_J-C=0.5 C/W and the mounting insulation has HC-S=0.6 C/W. What maximum power can be dissipated if the ambient temperature is 40 C and (T_J)MAX=200 C?
A.	70.6W
B.	61.5W
C.	37.8W
D.	56.9W
Answer» C. 37.8W

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