Patent ID: 6271545
Filing Date: 2001-08-07
Classification: H01L

Abstract:
An asymmetrical thyristor, comprising:a semiconductor body having a first electrode serving as cathode and a second electrode serving as anode, and the semiconductor body having a plurality of differently doped regions;the differently doped regions being positioned such that the regions form a cathode-side emitter of a first conductivity type, a cathode-side base of a second conductivity type, an anode-side base of the first conductivity type and an anode-side emitter of the second conductivity type;a stop zone of the first conductivity type located in the anode-side base;the stop zone having a central region, lying under one of a trigger contact or a light-sensitive structure, and a region laterally adjoining thereto;the stop zone being more lightly doped in the central region than in the laterally adjoining region; andthe anode-side emitter being provided with anode shorts.