Patent ID: 7709937

Claim:
A semiconductor device comprising: a semiconductor chip which has a main surface, a back surface and side surfaces, and a plurality of electrodes which are formed over the main surface; a chip mounting plate which has a main surface, a back surface and side surfaces, and the semiconductor chip is mounted over the main surface of the chip mounting plate; a common lead which has a main surface, a back surface and side surfaces, and is located outside of the semiconductor chip and connected with the chip mounting plate; a plurality of suspension leads which have a main surface, a back surface and side surfaces respectively, and which connect with the chip mounting plate and the common lead; a sealing body which resin-seals the semiconductor chip; a plurality of leads which are arranged in a line around the semiconductor chip as partially exposed on the back surface of the sealing body; a plurality of first wires which connect the plurality of the electrodes of the semiconductor chip and the plurality of leads respectively; and a plurality of second wires which connect to the plurality of the electrodes of the semiconductor chip and the common lead, wherein the suspension leads each having a first portion and a second portion, the first portion being arranged between the chip mounting plate and the common lead, wherein the sealing body has a continuous portion which continues from the side surface of the semiconductor chip to its back surface to the side surface of the chip mounting plate, wherein the back surface of the plurality of the leads, the back surface of the chip mounting plate, the back surface of the common lead, and the back surface of the first portion of the suspension leads are exposed on the same plane of the back surface of the sealing body, wherein the chip mounting plate, and the common lead are separated from each other, wherein the second portion of the suspension leads is arranged in the sealing body, and wherein part of the back surface of the semiconductor chip is in directly contact with part of the sealing body.