Patent ID: 7563653

Claim:
A method of manufacturing an apparatus, comprising: forming a first N doped region to a first depth in a P doped substrate; forming a first P doped region to a second depth within the first N doped region, wherein the second depth is substantially less than the first depth; forming a first P+ doped region to a third depth within the first P doped region, wherein the third depth is substantially less than the second depth; forming a second N doped region to the second depth within the first N doped region and substantially laterally surrounding the first P doped region; forming a first N+ doped region to the third depth in an annulus shape within the second N doped region; forming a second P doped region to the second depth within the substrate and adjacent the second N doped region; forming a second N+ doped region to the third depth within the second P doped region; forming a third N doped region to the second depth within the substrate and adjacent the second P doped region; forming a third N+ doped region to the third depth within the third N doped region; forming a third P doped region to the second depth within the substrate and adjacent the third N doped region; forming a fourth N+ doped region to the third depth within the third P doped region; and forming an electrode over the substrate and extending at least between the third and fourth N+ doped regions.