Patent ID: 6208012
Filing Date: 2001-03-27
Classification: H01L,Y10S

Abstract:
A Zener zap diode comprising:a semiconductor substrate having a substrate surface;a first diode region of a first conductivity type disposed in said substrate;a second diode region of a second conductivity type disposed in said substrate and forming a PN junction in combination with said first diode region in an area adjacent to the substrate surface;a first metallized region on said substrate surface electrically connected to said PN junction;a third region of said first conductivity type in said substrate, said third region being an extension of said first region and being spaced from said PN junction;a conductive layer overlying said third region on said substrate surface;a second metallized region in electrical contact with said conductive layer, said second metallized region being separate and spaced from said first metallized region and forming an interface with said conductive layer, at least a portion of said interface overlying said third region; andsaid substrate and said conductive layer having a path between said first metallized region and said second metallized region which is substantially free of any insulating material to allow formation of a conductive path between said first metallized region and said second metallized region for zap trimming.