Patent ID: 7521795

Claim:
A semiconductor package comprising: a semiconductor chip having first and second main electrodes arranged on two principal surfaces of the semiconductor chip, respectively, the two principal surfaces being opposite to each other; a first main wiring plate connected to the first main electrode and having a first external connection terminal whose location is separated from a location where the first main wiring plate is connected to the first main electrode; a second main wiring plate connected to the second main electrode and having a second external connection terminal whose location is separated from a location where the second main wiring plate is connected to the second main electrode; a first shell connected through an insulating film to at least a part of a second principal surface of the first main wiring plate, the second principal surface of the first main wiring plate being opposite to a first principal surface of the first main wiring plate that is connected to the first electrode; and a second shell connected through an insulating film to at least a part of a second principal surface of the second main wiring plate, the second principal surface of the second main wiring plate being opposite to a first principal surface of the second main wiring plate being opposite to a first principal surface of the second main wiring plate that is connected to the second electrode, wherein: the first and second main wiring plates are arranged so that the first principal surfaces are adjacent to and parallel to each other, the first and second external connection terminals are arranged outside of the location where the first principal surfaces are adjacent to and parallel to each other, and the first and second main wiring plates and the first and second external connection terminals are arranged so that the first and second main wiring plates and the first and second external connection terminals are plane symmetrical about an axis parallel to the principal surfaces of the semiconductor chip.