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. 11, 2010
Filed:
Dec. 20, 2005
Applicants:
Vladislav Vashchenko, Palo Alto, CA (US);
Alexei Sadovnikov, Sunnyvale, CA (US);
Peter J. Hopper, San Jose, CA (US);
Andy Strachan, Sunnyvale, CA (US);
Inventors:
Vladislav Vashchenko, Palo Alto, CA (US);
Alexei Sadovnikov, Sunnyvale, CA (US);
Peter J. Hopper, San Jose, CA (US);
Andy Strachan, Sunnyvale, CA (US);
Assignee:
National Semiconductor Corp, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 29/74 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a BSCR or BJT ESD clamp, the breakdown voltage and DC voltage tolerance are controlled by controlling the size of the collector of the BJT device by masking part of the collector.