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. 19, 2021
Filed:
May. 09, 2019
Applicant:
Littelfuse, Inc., Chicago, IL (US);
Inventors:
Yuriy Borisovich Matus, Pleasanton, CA (US);
Martin Pineda, Fremont, CA (US);
Kedar V. Bhatawadekar, Santa Clara, CA (US);
Assignee:
Littelfuse, Inc., Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/74 (2020.01); H01C 1/144 (2006.01); H01C 1/14 (2006.01); H02H 9/02 (2006.01); G01R 31/50 (2020.01);
U.S. Cl.
CPC ...
G01R 31/74 (2020.01); G01R 31/50 (2020.01); H01C 1/144 (2013.01); H01C 1/1406 (2013.01); H02H 9/026 (2013.01);
Abstract
A circuit protection device including a primary fuse, and a positive temperature coefficient (PTC) device and a secondary fuse electrically connected in series with one another and in parallel with the primary fuse, the secondary fuse formed of a quantity of solder disposed on a dielectric surface, wherein the dielectric surface exhibits a de-wetting characteristic relative to the solder such that, when the solder is melted, the solder draws away from the dielectric surface to create a galvanic opening.