Patent ID: 8299600

Claim:
A semiconductor device comprising: a chip mounting portion; a semiconductor chip including a first main surface, a first electrode formed in the main surface, and a second main surface opposite to the first main surface, the semiconductor chip being mounted over the chip mounting portion such that the second main surface is opposed to the chip mounting portion; a first lead portion arranged spaced apart from the chip mounting portion; a metal plate for electrically cooping the first lead portion to the first electrode of the semiconductor chip; and a sealing member for covering a part of the chip mounting portion, a part of the first lead portion, the semiconductor chip, and the metal plate, wherein a hardness of the metal plate is lower than that of each of the chip mounting portion and the first lead portion, wherein the metal plate is respectively solder-bonded to the first electrode of the semiconductor chip and the first lead portion, and wherein the metal plate is comprised of oxygen-free copper, and the chip mounting portion and the first lead portion are comprised of a copper alloy.