Patent ID: 8436451

Claim:
A semiconductor device comprising: a semiconductor chip; an island in which said semiconductor chip is mounted on one surface; a plurality of external connection terminals disposed around said semiconductor chip along an outer rim of said semiconductor chip with a gap being defined from said island; and a resin that seals said semiconductor chip, said island, and said plurality of external connection terminals from said one surface and exposes said island and said plurality of external connection terminals on other surface, wherein said plurality of external connection terminals include a first external connection terminal disposed at a central part of each of sides of the outer rim of said semiconductor chip and a second external connection terminal disposed at each of the sides of the outer rim of said semiconductor chip and outside said first external connection terminal, and said first external connection terminal has an area larger than that of said second external connection terminal, and said plurality of external connection terminals are disposed at corner parts of the sides of the outer rim of said semiconductor chip and further includes a third external connection terminal having an area that is larger than that of said second external connection terminal.