Patent ID: 6809410
Filing Date: 2004-10-26
Classification: H01L,H01R

Abstract:
A power semiconductor module, comprising:an electrode terminal connected with an electric power semiconductor device which is resin sealed inside of a case at one end while having a hole and exposed along a side of an outer surface of the case at the other end; an electrode plate for external connection having a hole and arranged to overlie said electrode terminal on the outer surface of the case; a nut embedded in the outer surface of the case and located adjacent to a lower surface of the electrode terminal, the nut comprising a female screw hole provided to correspond to said hole of the electrode terminal; and a male screw member comprising screw threads, the male screw member comprising a small-diameter portion engaging threadedly with the female screw hole of the nut and a large-diameter portion having a diameter greater than the small diameter portion, the male screw member mounted penetratingly through said hole of said electrode terminal and engaging threadedly with the female screw hole so that the male screw member is restricted at a position where a lower end of the large-diameter portion abuts against an upper surface of the nut at a side of the small-diameter portion while projecting from an upper surface of the electrode terminal at a side of the large-diameter portion, wherein said electrode plate for external connection is electrically connected with said electrode terminal on the outer surface of the case by placing said electrode plate so that the large-diameter portion of the male screw member passes through said hole of the electrode plate, and then engaging a nut with the large-diameter portion of the male screw member.