Patent ID: 7851902

Claim:
A resin-sealed semiconductor device, comprising: a semiconductor element; a plurality of terminal members, each surrounding the semiconductor element and including an external terminal portion connected with an external circuit, an internal terminal portion connected with the semiconductor element, and a connecting portion connecting the external terminal portion with the internal terminal portion; bonding wires, each electrically connecting the semiconductor element with the internal terminal portion of each terminal member; and a resin-sealing portion sealing the semiconductor element, terminal members and bonding wires, wherein each terminal member has a flat rear face and two stepwise front faces and is composed of an inner thinned portion forming the internal terminal portion and an outer thickened portion forming the external terminal portion, wherein a rear face of each internal terminal portion, a front face of each external terminal portion, a rear face of the external terminal portion and an outer side face of the external terminal portion are respectively exposed to the outside from the resin-sealing portion, and wherein a recess is formed in the inner side face of each internal terminal portion, in the inner cross section parallel to a longitudinal direction thereof.