Patent ID: 6489187
Filing Date: 2002-12-03
Classification: H01L

Abstract:
A method for setting a breakover voltage of a thyristor, the method which comprises:providing a thyristor with a semiconductor body having, in succession, an n-doped cathode-side emitter, a p-doped cathode-side base, an n-doped anode-side base and a p-doped anode-side emitter, and the semiconductor body having a given region in which a current flow is triggered if a forward-biased electrical voltage between the anode-side emitter and the cathode-side emitter reaches a breakover voltage; and radiating helium ions into the given region provided for triggering the current flow and producing, with the helium ions, defects in a cathode-side half of the anode-side base such that the defects counteract dopant atoms present in the cathode-side half of the anode-side base.