Patent ID: 7595540

Claim:
A semiconductor device comprising: a base having a base plate and a frame member, the frame member comprising a plurality of wall portions standing upright along a peripheral end of the base plate, the wall portions defining a plurality of spaces between the plurality of wall portions; a semiconductor element mounted in an internal space of the base, the semiconductor element having a plurality of electrodes on at least one side thereof; a plurality of conductor portions along the peripheral end of the base plate, each located in one of the plurality of spaces between two adjacent wall portions, the conductor portions located on a same side of the base plate as the corresponding electrodes of the semiconductor element along a peripheral end of the semiconductor element; thin metal wires electrically connecting each of the electrodes of the semiconductor element to respective conductor portions; resin portions in the spaces between the wall portions covering connecting portions of the conductor portions and the thin metal wires; and an enclosing member for enclosing the internal space of the base in which the semiconductor element is mounted.