Patent ID: 8269338

Claim:
A semiconductor device mountable to a substrate, comprising: a semiconductor die; an electrically conductive lead frame having first and second end portions and a first attachment surface and a second attachment surface, wherein the semiconductor die electrically contacts the first end portion of the lead frame on the first attachment surface; and an externally exposed housing enclosing the semiconductor die and the first end portion of the lead frame, said housing including a metallic plate facing the second attachment surface of the lead frame; wherein a portion of said housing lies between said second attachment surface of the lead frame and the metallic plate, wherein said housing comprises a single type of molding compound, and further wherein a thickness of said housing located on the side of the second attachment surface, extending from the second attachment surface to a bottom, outer portion of the metallic plate, is substantially thinner than a thickness of said housing located on the side of the first attachment surface.