Patent ID: 7923826
Filing Date: 2011-04-12
Classification: H01L

Abstract:
1. A semiconductor device, comprising: (a) a board having a first main surface and a second main surface opposite to the first main surface, the board including a through-hole reaching the second main surface from the first main surface, a plurality of first electrodes formed around the through-hole on the first main surface, a plurality of second electrodes formed around the through-hole on the second main surface, and a heat sink disposed inside the through-hole; (b) a semiconductor chip having a third main surface, on which a plurality of third electrodes are formed, and mounted on an upper surface of the heat sink; (c) a plurality of conductive wires electrically connecting the plurality of third electrodes of the semiconductor chip and the plurality of first electrodes of the board; (d) a sealing portion for sealing the semiconductor chip and the plurality of conductive wires; and (e) a plurality of external terminals formed on the plurality of second electrodes of the board, respectively, wherein a thickness of the heat sink is larger than a thickness of the board, the heat sink has a protruded portion protruding to outside from a side surface of the heat sink in a peripheral edge portion of the upper surface of the heat sink, and the protruded portion is located on the first main surface of the board outside the through-hole, and a lower surface of the protruded portion contacts to the first main surface of the board.