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. 22, 2012
Filed:
Mar. 27, 2006
Wayne Montoya, Redwood City, CA (US);
Luis A. Navarro, San Carlos, CA (US);
Cecilia A. Walsh, Los Altos, CA (US);
Adrian P. Mikolajczak, Los Altos, CA (US);
Wayne Montoya, Redwood City, CA (US);
Luis A. Navarro, San Carlos, CA (US);
Cecilia A. Walsh, Los Altos, CA (US);
Adrian P. Mikolajczak, Los Altos, CA (US);
Tyco Electronics Corporation, Middletown, PA (US);
Abstract
A surface-mountable electrical circuit protection device includes layers defining a first PPTC resistive element, a second PPTC resistive element, and at least one heat-generating electrical component such as a planar zener diode chip positioned between, and in thermal contact with, the first and second PPTC elements, such that an electrical current above a threshold level passing through the component causes the component to heat, the heat being transferred to the PPTC resistive elements and tripping at least one, and preferably both of the first or second PPTC elements to a high resistance state. A series of edge-formed terminal electrodes enable surface-mount connection of the first and second PPTC elements and the electrical component to an electrical circuit substrate, such as a printed circuit board. A method for making the device is also disclosed.