Patent ID: 8766420

Claim:
A semiconductor device comprising two or more semiconductor elements that are stacked and mounted on a lead frame, the lead frame is electrically joined to the two or more semiconductor elements with a wire, and the semiconductor elements, the wire and an electric junction are encapsulated with a cured product of an epoxy resin composition for encapsulating the semiconductor device, wherein the epoxy resin composition for encapsulating the semiconductor device contains: (A) an epoxy resin; (B) a curing agent; and (C) an inorganic filler; wherein the inorganic filler contains particles haying particle diameter of equal to or smaller than two-thirds of a thinnest filled thickness at a rate of equal to or higher than 99.9% by mass; and the content rate of the inorganic filler is equal to or higher than 60% by mass and is equal to or lower than 92% by mass over the epoxy resin composition for encapsulating the semiconductor device.