Patent ID: 8592914

Claim:
A semiconductor device comprising: a first chip mounting portion having a top surface and a bottom surface opposite the top surface; a first semiconductor chip disposed over the top surface of the first chip mounting portion including a first MOSFET, the first semiconductor chip having an obverse surface and a reverse surface opposite the obverse surface, a first source electrode pad and a first gate electrode pad are formed over the obverse surface, and a first drain electrode is formed over the reverse surface; a plurality of first leads electrically connected to the first source electrode pad of the first semiconductor chip; a first metal plate electrically connected to the plurality of first leads and the first source electrode pad of the first semiconductor chip; and a sealing body sealing a part of the first chip mounting portion, a first semiconductor chip, parts of the plurality of first leads, and a first metal plate, wherein a first slit is formed at a portion electrically connected to the plurality of first leads of the first metal plate.