Patent ID: 6476452
Filing Date: 2002-11-05
Classification: H01L

Abstract:
A semiconductor device, comprising:a first conduction type semiconductor substrate; a second conduction type area formed on a surface of the semiconductor substrate; a first conduction type intrinsic base region formed on a surface of the second conduction type area; an extrinsic base region surrounding the intrinsic base region; a second conduction type emitter region formed in the intrinsic base region; an emitter electrode contacting the emitter region; a base electrode contacting the extrinsic base region on only one side of the emitter electrode; a second conduction type collector plug region formed in the second conduction type area; an element isolation area for isolating the first conduction type intrinsic base region and the extrinsic base region electrically from the second conduction type collector plug region; and a cobalt silicide film formed to surround the emitter electrode, as viewed from above, on the extrinsic base region, and formed to contact a surface of the second conduction type collector plug region.