Patent ID: 7599187

Claim:
A semiconductor module comprising: a module main body having a board and at least two kinds of semiconductor devices mounted on the board, wherein, a first kind of semiconductor device generates a relatively larger amount of heat than does a second kind of semiconductor device while being operated; first and second heat radiating plates mounted to cover outer faces of the semiconductor devices; and a plurality of heat conducting sheets interposed between the module main body and each of the heat radiating plates, the plurality of heat conducting sheets including at least first and second heat conducting sheets, wherein the first heat conducting sheet is interposed between the first kind of semiconductor device and the first heat radiating plate and has a relatively higher heat conductivity than the second heat conducting sheet, and the second heat conducting sheet is interposed between the second kind of semiconductor device and the first heat radiating plate and has a relatively lower heat conductivity than the first heat conducting sheet, wherein the plurality of the second kind of semiconductor devices are provided on the board, and the second heat conducting sheet is provided so as to cover at least two of the second kind of semiconductor devices, and wherein the second heat radiating plate is formed in a planar shape so as to cover a planar region of the board and is mounted to cover all of the semiconductor devices mounted on one side the board.