The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 1990
Filed:
Aug. 30, 1985
Helmut Herberg, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A thyristor has a semiconductor body which comprises an n-emitter provided with a first contact in a first principal surface, a p-base adjacent thereto, a p-emitter provided with a second contact in a second principal surface, and an n-base adjacent to the second principal surface. A high dI/dt stability is achieved since one of the emitters is formed of a plurality of emitter regions, the adjacent base is formed of a plurality of island-shaped base regions, and each of the base regions has a field effect transistor allocated to it via which an ignition current circuit for an emitter region respectively inserted into the base region proceeds. The field effect transistors of all base regions are driven via a common gate terminal for ignition.