Patent ID: 8637976

Claim:
A semiconductor device, comprising: a semiconductor chip having a plurality of electrodes on the surface thereof, a plurality of lead terminal portions for external connection, hanging lead portions coupled to a supporting portion on which the semiconductor chip is mounted, metal wires for respectively connecting the lead terminal portions and the electrodes of the semiconductor chip to each other, and a sealing resin for sealing the semiconductor chip and the metal wires in such a manner that a part of each lead terminal portion is exposed, wherein lead terminal portions among the plurality of the lead terminal portions, arranged adjacent to the hanging lead portions each have a chamfered portion at an end closer to the semiconductor chip, the chamfered portion is chamfered substantially along an adjacent one of the hanging lead portions, and a pair of the chamfered portions confront each other across the corresponding hanging lead portion, and wherein the plurality of lead terminal portions includes successively adjacent lead terminal portions each having a head side confronting the semiconductor chip, the head sides of the respective successively adjacent lead terminal portions being aligned along a straight line, and each of the head sides confronts a corresponding one of the head sides across the semiconductor chip.