Patent ID: 7183892
Filing Date: 2007-02-27
Classification: H01C,Y10T

Abstract:
1. A chip PTC thermistor, comprising: a cuboidal base comprising a conductive polymer having PTC characteristics; a first main electrode on a first surface of said conductive polymer base; a first sub-electrode on the same surface as said main electrode, and independent from said first main electrode; a second main electrode on a second surface of said conductive polymer base opposite said first surface; a second sub-electrode on the same surface as said second main electrode, and independent from said second main electrode; a first side electrode covering at least an entire surface of one side surface of said conductive polymer base, said first side electrode electrically connected with said first main electrode and said second sub-electrode; and a second side electrode covering at least an entire surface of a second side surface opposite said one side surface of said conductive polymer base, said second side electrode electrically connected with said first sub-electrode and said second main electrode, wherein portions of two sides of said first main electrode and the entire two sides of said first sub-electrode are exposed outside said chip PTC thermistor on two sides other than the sides of said chip PTC thermistor where said first side electrode and said second side electrode are formed, and portions of two sides of said second main electrode and the entire two sides of said second sub-electrode are exposed outside said chip PTC thermistor on two sides other than the sides of said chip PTC thermistor where said first side electrode and said second side electrode are formed.