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:
Mar. 11, 2003
Filed:
Feb. 15, 2000
Applicant:
Inventors:
Kelly C. Casey, Flower Mound, TX (US);
Elmer L. Turner, Jr., Irving, TX (US);
Assignee:
Teccor Electronics, L.P., Irving, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/974 ; H01L 3/1111 ;
U.S. Cl.
CPC ...
H01L 2/974 ; H01L 3/1111 ;
Abstract
A semiconductor thyristor device that incorporates buried regions centrally located on the chip with respect to the other semiconductor regions. By centering an upper and lower buried region, larger-area contacts can be realized, thereby increasing the current capability of the device. In order to achieve low breakover voltage devices, the buried regions are offset laterally with respect to the respective emitter regions. The low voltage thyristor devices can be incorporated into five-pin protection modules for protecting customer circuits.