MT6M15962a
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Assuming that the thermal grease thickness is uniform, the required thermal grease weight is given
by the following equation.
Calculate the thermal grease weight that corresponds to the required thermal grease thickness from
this equation, and apply the thermal grease. The recommended thermal grease thickness after
spreading of thermal grease is
100μm. Also please note that the optimum thermal grease thickness
varies depending on the characteristics of the thermal grease used and the application method.
Table 5-1 shows the base plate area of IPMs.
5-5
Table5-1 Base plate area of IPM
Package
Base plate area (cm
2
)
P639
14.74
P629
21.71
P626, P644
22.77
P636, P638
41.17
P630
55.67
P631
141.24
Thermal grease
thickness (
μm)
Thermal grease
weight (g) x 10
4
Base plate area of
module (cm
2
)
=
Density of thermal
grease (g/cm
3
)
x
x
