LICHTSTEUERBARER THYRISTOR.

摘要

The thyristor has a semiconductor substrate incorporating a photo-sensitive zone (3), a base zone (1), an auxiliary emitter zone (2) and a main emitter zone (20). The auxiliary emitter zone is contacted by an auxiliary emitter electrode (5) to provide an auxiliary thyristor, the emitter electrode (5) also contacting the base zone, on the side facing the main emitter zone. The auxiliary emitter zone is bridged by a capacitor (C). Pref. the photo-sensitive zone is provided by the base zone and is contacted by the base electrode, with the auxiliary emitter zone enclosing the photo-sensitive zone and enclosed in turn by the main emitter zone.