| 摘要 |
A power semiconductor device according to the present invention comprises at least one insulating substrate; at least one power semiconductor element mounted on a metal pattern formed on the main surface of the insulating substrate; and a control circuit board which is arranged so that its first surface can oppose the above main surface of the insulating substrate with the power semiconductor element interposed therebetween, and which has at least one electronic component for control, mounted on a metal pattern formed on its second surface in parallel to the above first surface, and at least one through hole formed vertically to the first and second surfaces so as to electrically connect circuit patterns laminated between the first surface and the second surface, and this power semiconductor device is characterized in that the above through hole is filled with a filler.
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