Patent ID: 7361983
Filing Date: 2008-04-22
Classification: H01L,H05K

Abstract:
1. A semiconductor device of an insertion-mount-type comprising: a plastic package; a plurality of leads protruding outward from said plastic package; one or more semiconductor elements protected by said plastic package; and electric wiring protected by said plastic package to connect said semiconductor elements with said leads, said semiconductor device being mounted on an external electric member by inserting said leads into a lead-inserting portion of said external electric member and joining said leads with said lead-inserting portion by solder, at least one of said semiconductor elements being a power semiconductor element, and each of said leads being coated with solder using tin as a base material without containing lead on outside of said plastic package, wherein each of said leads includes a first lead portion located at a plastic package side, a second lead portion located at a position closer to a lead tip end than said first lead portion, and a third lead portion located at a position closer to the lead tip end than said second lead portion, the third lead portion being inserted into said lead-inserting portion, the sectional area of said second lead portion is set to a value smaller than that of said first lead portion, and at least some of said leads are formed as gap-controlling leads provided with gap-controlling means to keep a gap between said semiconductor device and said external electric member constant by inserting at least some of the third lead portions into said external electric member up to said gap-controlling means, said gap-controlling means being located at a position closer to the lead tip end than said second lead portion and said gap-controlling means having a side surface configured to contact the external electric member but not enter the lead-inserting portion when the third lead portion is inserted into the lead-inserting portion.