Patent ID: 6075276
Filing Date: 2000-06-13
Classification: H01L

Abstract:
A semiconductor device comprising:a first conductivity type semiconductor substrate having a first surface and a second surface;a second conductivity type Zener region formed in a surface layer of said first surface of said first conductivity type semiconductor substrate;a first conductivity type anode region formed within said second conductivity type Zener region;an anode electrode formed in contact with both said first surface of said semiconductor substrate and said first conductivity type anode region, wherein said anode electrode is grounded;a cathode electrode formed on a surface of said second conductivity type Zener region and connected to input and output terminals; anda pickup region formed in the surface layer of said first surface of said first conductivity type semiconductor substrate;wherein a PN junction between said first conductivity type anode region and said second conductivity type Zener region comprises a Zener diode; andwherein said anode electrode contacts said pickup region.