Patent ID: 6642605
Filing Date: 2003-11-04
Classification: H01L

Abstract:
A semiconductor device equipped with a trimming circuit having a Zener zap diode,said semiconductor device comprising a diode between a terminal for applying a voltage used on trimming said trimming circuit and said Zener zap diode, said diode comprising a first region of a first conductive type and a second region of a second conductive type which are formed on a substrate, said diode further comprising a third region of said second conductive type in at least a part of said first region, said third region being separated from said second region by said first region, said diode further comprising a fourth region of said first conductive type in at least in a part of said second region, said fourth region being separated from said first region by said second region, said third region being connected to said first region with wiring, and said fourth region being connected to said second region with wiring.