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. 29, 1993
Filed:
Dec. 20, 1991
Applicant:
Inventor:
Athos Canclini, Como, IT;
Assignee:
SGS-Thomson Microelectronics s.r.l., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
257546 ; 257362 ; 257363 ; 257603 ;
Abstract
A circuit for protection from overvoltages of an external electrical connection pad of a circuit integrated in an n type conductivity epitaxial layer formed on a monocrystal semiconductor substrate, comprises a lateral integrated transistor having an emitter connected to said pad, a collector connected to ground and a base connected to said pad across a resistor, and an integrated Zener diode functionally connected between the base and the collector of said transistor.