Patent ID: 7084485

Claim:
A method of manufacturing a semiconductor component, the method comprising: providing a semiconductor substrate having a surface and a first conductivity type; forming a trench in the surface of the semiconductor substrate to define a plurality of active areas separated from each other by the trench; forming a spacer structure in the trench; forming a buried layer in the semiconductor substrate underneath a portion of the trench, wherein the buried layer has a second conductivity type and is at least partially contiguous with the trench; after forming the buried layer: depositing an electrically insulating material in the trench; and removing the spacer structure; forming a collector region having the second conductivity type in one of the plurality of active areas; forming a base structure having the first conductivity type over the one of the plurality of active areas; and forming an emitter region having the second conductivity type over the one of the plurality of active areas, wherein: the collector region forms a contact to the buried layer.