Patent ID: 9401257
Filing Date: 2016-07-26
CPC Classification: H01H,Y02E

Claim Text:
1. A circuit protection device, comprising: a substrate; a conducting layer disposed on said substrate, said conducting layer having a first conducting path and a second conducting path; a first resistive element disposed on a first portion of the first conducting path and a first portion of the second conducting path; a second resistive element disposed on a second portion of the first conducting path and a second portion of the second conducting path; a dielectric layer disposed on the first and second resistive elements; a first conducting pad disposed on said dielectric layer and above said first resistive element, the first conducting pad connected to a first terminal; a third conducting pad disposed on said dielectric layer and above said second resistive element, the second conducting pad connected to a second terminal, the first conducting path connected to a third terminal; a diffusion layer disposed over said first and second conducting pads; and a glass layer disposed over the diffusion layer, wherein when an abnormal circuit condition occurs heat is generated by the first and second resistive elements which causes a portion of the diffusion layer to diffuse into the glass layer to create an open circuit between the first and second terminals.