Heat Sink
Heat Sink cross sectional area Width
b =
cm
Heat Sink cross sectional area Hight
h =
cm
Heat Sink cross sectional area Length
d =
mm
Material
Silicon
Solder (Sn-Pb)
Cu
Al
Al
2
O
3
FR4
Heat conductive paste
Insulating foil
Calculate R
th
Thermal conduction resistance
R
th,cond
=
°C/W
Heat capacity
C
th,cond
=
Ws/°C
Thermal time constant
t
th,cond
=
s
Heat Sink volume
V =
cm
3
Heat Sink mass
M =
g
Heat Sink cross sectional area
A =
cm
2
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Source: Power Electronics Converters, Applications and Design, Second Edition, Ned Mohan, Chapter 29