Patent ID: 7968997
Filing Date: 2011-06-28
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a rectangular wiring board having a first surface with external terminals and a second surface with internal connection terminals; a semiconductor chip, mounted on the second surface of the wiring board, having electrode pads arranged along at least one outer side of the semiconductor chip; connecting members electrically connecting the electrode pads of the semiconductor chip and the internal connection terminals of the wiring board; and a sealing resin layer provided on the second surface of the wiring board to seal the semiconductor chip together with the connecting members, wherein the external connection terminals are arranged along two opposite outer sides of the wiring board and each have a rectangular shape elongated in a direction toward the outer side, wherein the external connection terminals each have the rectangular shape satisfying conditions of 0.4 P≦W≦0.6 P and W<L≦2 W, where P is a formation pitch of the external connection terminals, W is a length of a shorter side of the external connection terminal, and L is a length of a longer side of the external connection terminal.