Patent ID: 8304902

Claim:
A semiconductor device comprising: a first radiator plate; a second radiator plate disposed separately away from the first radiator plate; a plurality of first lead terminals arranged on a first side of the first radiator plate and extending in a first direction from the first side; a second lead terminal arranged on a second side of the first radiator plate that is opposite to the first side; a third lead terminal arranged on the second side and located closer to the second radiator plate than the second lead terminal; a power semiconductor chip mounted on a main surface of the first radiator plate and including a pair of main electrodes; a control IC chip mounted on a main surface of the second radiator plate; and a mold material covering the first radiator plate, the second radiator plate, a part of the first lead terminals, a part of the second lead terminal, a part of the third lead terminal, the power semiconductor chip, and the control IC chip, the first lead terminals, second lead terminal and third lead terminals being led out from a pair of sides of the mold material in the opposite directions to each other, wherein the first radiator plate has an extending portion arranged on a third side of the first radiator plate extending in a direction perpendicular to the first direction, at least up to a position at which a side of the control IC chip furthest away from the first radiator plate exists, and the extending portion and the second radiator plate are arranged with a gap interposed therebetween, a temperature sensor is mounted on a part of the control IC chip close to the extending portion all of the first lead terminals are connected to the first radiator plate, one main electrode of the power semiconductor chip is connected to the first lead terminals, the other main electrode of the power semiconductor chip is connected to the second lead terminal, and an electrode of the control IC chip is connected to the third lead terminals.