Answer:
the microchip temperature will be 155° C
Explanation:
Area of the power transistor A= 1mm^2
A= 10^(-6) m^2
thickness t= 2 mm
T_2= 30° C
K= 140-180 W/mk
K= (140+180)/2
K= 160 W/mK
W= 10 watts
to find T_1
we know that
W= KAΔT/t
value
putting
[tex]10= 160\times10^{-6}\frac{T_1-30}{2\times10^{-3}}[/tex]
on solving we get T_1= 155° C
the microchip temperature will be 155° C