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. 28, 2011
Filed:
Dec. 09, 2008
Applicants:
George Templeton, Tempe, AZ (US);
James Washburn, Scottsdale, AZ (US);
Inventors:
George Templeton, Tempe, AZ (US);
James Washburn, Scottsdale, AZ (US);
Assignee:
Pan Jit Americas, Inc., Tempe, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/70 (2006.01);
U.S. Cl.
CPC ...
Abstract
An over-voltage protection thyristor has reduced junction capacitance making it suitable for use in high bandwidth applications. The reduced capacitance is achieved through the introduction of a deep base region. The deep base region has a graded doping concentration which reduces with depth into the substrate. The thyristor is useful for protecting sensitive electrical equipment from transient surges.