Patent ID: 7449786

Claim:
A semiconductor device comprising: (a) a semiconductor chip having over a main surface thereof a plurality of first electrode pads formed as exposed areas of a metallic film which contains aluminum (Al) as a main component; (b) a wiring substrate over which the semiconductor chip is mounted and which has a plurality of second electrode pads formed over a main surface thereof; and (c) electrically conductive wires for connecting the first and second electrode pads with each other, the electrically conductive wires containing gold (Au) as a main component and comprising ball portions formed over the first electrode pads, bonded portions formed over the second electrode pads, and wire portions for connecting the ball portions and the bonded portions with each other, the ball portions being bonded to the first electrode pads through an alloy layer of Al and Au, (d) wherein palladium (Pd) is contained in the electrically conductive wires, (e) wherein the distance between central positions between the adjacent first electrode pads is shorter than 65 μm, (f) wherein a diameter of the wire portions of each of the electrically conductive wires is less than or equal to 25 μm, (g) wherein the thickness of the metallic film is not greater than 400 nm, and (h) wherein a concentration of the palladium (Pd) included in each of the electrically conductive wires is approximately 1 wt. %.