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:
May. 14, 1996
Filed:
May. 24, 1995
Applicant:
Inventors:
Monty F Webb, Richardson, TX (US);
Elmer L Turner, Irving, TX (US);
Assignee:
Teccor Electronics, Irving, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437-6 ; 437 31 ; 437170 ; 437904 ;
Abstract
An overvoltage protection device having multiple shorting dots in the emitter region and multiple buried regions substantially aligned with these shorting dots. The placement, number, and area of these buried regions reduce and more accurately set the overshoot voltage value of the device while maintaining the high surge capacities of the device. Further, doping types and concentrations have been modified from that known in the prior art to reduce overshoot providing a more accurate and sensitive overvoltage protection device than that known previously in the prior art.