Patent ID: 6066864
Filing Date: 2000-05-23
Classification: H01L

Abstract:
A thyristor, comprising:a) a semiconductor body havinga 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 andan anode-side emitter of the second conductivity type following one another in said semiconductor body;b) a cathode metallization applied on the cathode-side emitter an anode metallization applied on the anode-side emitter,c) an auxiliary emitter embedded in the cathode-side base and formed by an annular region of the first conductivity type that is arranged such that the cathode-side emitter lies outside a region enclosed by the auxiliary emitter,d) a metallization contacting the auxiliary emitter and the cathode-side base, ande) an annular zone that is arranged between the auxiliary emitter and the anode-side base and that is formed by an annular region in the cathode-side base in which a concentration of doping is reduced compared to laterally adjoining regions of the cathode-side base.