Patent ID: 7518156

Claim:
A semiconductor device comprising: a seal member formed of an insulating resin; a tab whose back side is exposed from a mounting surface of the seal member, the tab having, on a surface thereof opposite to the back side, a semiconductor chip fixing area and wire connection areas; tab suspension leads contiguous to the tab; a plurality of leads disposed around and apart from the tab, whose back sides are exposed from the mounting surface of the seal member; a semiconductor chip positioned within the seal member and fixed through an adhesive onto the semiconductor chip fixing area in such a manner that a back side of the semiconductor chip is opposed to the semiconductor chip fixing area, the semiconductor chip has electrodes formed on a main surface of the semiconductor chip; electrically conductive wires for electrically connecting the electrodes of the semiconductor chip and surfaces of the leads and electrically connecting the electrodes on the semiconductor chip and the wire connection areas on the tab, wherein the tab is formed larger than the semiconductor chip so that outer peripheral edges of the tab are positioned outside outer peripheral edges of the semiconductor chip, and wherein the tab has first side surfaces formed under the semiconductor chip and second side surfaces opposed to the first side surfaces, each second side surface being formed between the semiconductor chip and the wire connection areas.