Patent ID: 8779575

Claim:
A semiconductor device comprising: (a) a wiring board; (b) a first semiconductor chip placed over the main surface of the wiring board; (c) a plurality of first leads electrically coupled with the first semiconductor chip; (d) a plurality of second leads each having a first surface and a second surface opposite the first surface; (e) at least one respective second semiconductor chip placed over the first surface of each of the plurality of second leads and having a power MOSFET functioning as a switching element formed therein; and (f) a sealing body having a top surface, a bottom surface opposite the top surface, and a plurality of side surfaces between the top and bottom surfaces in a thickness direction thereof, the sealing body sealing the wiring board, the first semiconductor chip, a partial area of each of the first leads, a partial area of each of the second leads, and each second semiconductor chip, wherein the wiring board is electrically coupled with each second semiconductor chip, wherein the entire second surface of each second lead is exposed from the sealing body, and wherein the second surface of each second lead has a first partial surface and a second partial surface, the first partial surface being located directly below the corresponding at least one second semiconductor chip and the second partial surface being on a part of the second lead protruded from one of the plurality of side surfaces of the sealing body, the first and second partial surfaces being in the same plane.