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:
Jan. 26, 2021
Filed:
Apr. 14, 2017
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventor:
Hiroki Yamamoto, Kyoto, JP;
Assignee:
ROHM CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/866 (2006.01); H01L 29/66 (2006.01); H01L 29/06 (2006.01); H01L 23/482 (2006.01); H01L 29/45 (2006.01);
U.S. Cl.
CPC ...
H01L 29/866 (2013.01); H01L 23/4824 (2013.01); H01L 29/0615 (2013.01); H01L 29/0657 (2013.01); H01L 29/0696 (2013.01); H01L 29/456 (2013.01); H01L 29/66106 (2013.01);
Abstract
The present invention is directed to a chip diode with a Zener voltage Vz of 4.0 V to 5.5 V, including a semiconductor substrate having a resistivity of 3 mΩ·cm to 5 mΩ·cm and a diffusion layer formed on a surface of the semiconductor substrate and defining a diode junction region with the semiconductor substrate therebetween, in which the diffusion layer has a depth of 0.01 μm to 0.2 μm from the surface of the semiconductor substrate.