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:
Jan. 09, 1996
Filed:
Jun. 06, 1995
Koichi Ohta, Hanno, JP;
Shindengen Electric Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A thyristor type surge protector having a breakdown voltage V.sub.BO approximately equal to a surge clamping voltage V.sub.CL includes a P-type first semiconductor layer, an N-type second semiconductor layer provided in one surface of the first semiconductor layer, a P-type third semiconductor layer provided in the second semiconductor layer so as to provide at least one first exposed region of the second semiconductor layer, and an N-type fourth semiconductor layer formed in the other surface of the first semiconductor layer so as to provide at least one exposed region of said first semiconductor layer, a first electrode provided over the third semiconductor layer and of the first exposed region, and a second electrode provided over the fourth semiconductor layer and second exposed region.