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:
Apr. 29, 2025
Filed:
Oct. 13, 2022
Polytronics Technology Corp., Hsinchu, TW;
POLYTRONICS TECHNOLOGY CORP., Hsinchu, TW;
Abstract
An over-current protection device includes a resistor element, an outer electrode, and an encapsulation layer. The resistor element has a first insulation layer, a first electrically conductive layer, a PTC material layer, a second electrically conductive layer and a second insulation layer stacked sequentially from bottom to top. The first insulation layer has a bottom surface and a first sidewall adjoining the bottom surface. The outer electrode has a first electrode and a second electrode disposed on the bottom surface. The first and second electrodes are electrically connected to the first conductive layer through the first and second vias, respectively. The encapsulation layer covers the first sidewall of the first insulation layer and extends to a part of the bottom surface, thereby forming a first perimeter on the bottom surface of the first insulation layer. The first and second electrodes are located inside the first perimeter.