Specifications

22
Dec. 20
Mitsubishi IPM-series Application Note
8-4 Coating Method of Thermal Grease (Example)
The coating method of thermal grease is introduced in this section. The thermal grease is called as grease in the following.
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1
Preparations: power module, grease, scraper or roller, electronic mass meter and gloves
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2
Relationship between the coating amount and thickness is,
Thickness of grease㧩
䌝䌛䌝䌛
䌝䌛
32
g/cmgrease ofdensity cmmodule of area base
g grease of amount
×
The recommended thickness of grease is 100μm~200μm.
The amount of grease can be obtained as the following example.
For example : For case with size of 11089(PM100CSD060), the amount of Shin-Etsu Chemical Co.,Ltd. grease
G-746 can be calculated through the equation below.
100㨪200μm㧩
䌝䌛䌝䌛
䌝䌛
32
g/cm66.2cm9.97
ggrease of amount
×
ѕThe amount needed isѳ2.6~5.2㨇g㨉
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3
Measure the mass of module
٤
4
Measure the grease with the same amount as calculated
٤
5
Coating the module base uniformly by using scraper or roller
٤
6
Mask print of grease.
Finally it is fulfilled to uniformly cover thermal grease on the module base with specified thickness.
Table 4 Thermal Compounds
Manufacturer Type Note
Shin-Etsu Chemical Co., Ltd.
GE Toshiba Silicones
KS-609, G-747, else
YG6260
ALCAN
UNIVERSAL
JOINTING-COMPOUND
For non-insulation type
For more information, please refer to manufacturers.
Installation of power Module