Patent ID: 8258604

Claim:
A semiconductor device, comprising: (a) a die pad; (b) a plurality of leads disposed around the die pad; (c) a semiconductor chip having a principal surface and a rear surface opposite the principal surface, and including a plurality of magnetic memory elements and a plurality of bonding pads on the principal surface side, the semiconductor chip being disposed over the die pad; (d) a first magnetic shield material formed of a metal plate and disposed between the die pad and the rear surface of the semiconductor chip; (e) a second magnetic shield material formed of a metal plate and disposed over the principal surface of the semiconductor chip so as to cover a region where the magnetic memory elements are formed; (f) a plurality of bonding wires for electrically coupling the bonding pads to the leads, respectively; and (g) a resin body sealing a part of the respective leads, the bonding wires, the die pad, the semiconductor chip, the first magnetic shield material, and the second magnetic shield material, wherein the area of the second magnetic shield material is smaller than the area of the principal surface of the semiconductor chip, wherein the thickness of the second magnetic shield material is thicker than the thickness of the first magnetic shield material, and wherein the area of the die pad is smaller than the area of the first magnetic shield material and smaller than the area of the semiconductor chip.