Patent ID: 6492739
Filing Date: 2002-12-10
Classification: H01L

Abstract:
A semiconductor device comprising:a heat sink having a chip mounting portion and four bumper portions which are integral with the heat sink, a semiconductor chip mounted on the chip mounting portion, a resin body of a quadrilateral shape sealing the semiconductor chip, and a plurality of leads electrically connected with the semiconductor chip and each having an outer lead protruding from four sides of the resin body, wherein the four bumper portions protrude respectively from four corners of the resin body, the four bumper portions are each thicker and wider than each one of the outer leads, each of the four bumper portions has a rear surface on a level with a rear surface of the chip mounting portion, the rear surfaces of the four bumper portions and the rear surface of the chip mounting portion protrude from the resin body, each one of the outer leads is bent into a gull-wing shape, and a rear surface of each one of the outer leads is positioned lower than the rear surface of each one of the four bumper portions.