Patent ID: 7329566
Filing Date: 2008-02-12
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor component comprising: providing a composite substrate comprising a semiconductor epitaxial layer above a semiconductor substrate, the composite substrate having a first conductivity type; forming a buried semiconductor region in the epitaxial layer, having the second conductivity type; forming a first semiconductor region in the epitaxial layer, having the first conductivity type and located above the buried semiconductor region; forming a second semiconductor region in the epitaxial layer having the second conductivity type and located above at least a portion of the first semiconductor region; disposing a sinker region having the second conductivity above the buried semiconductor region; disposing an emitter having the second conductivity type in the second semiconductor region, wherein the sinker region electrically ties the buried semiconductor region and the emitter via the second semiconductor region; and disposing a collector having the second conductivity type in the first semiconductor region, wherein the second semiconductor region and the buried semiconductor region deplete the first semiconductor region in response to a reverse bias potential applied across the semiconductor component.