Abstract: A PTC thermistor comprising a ceramic body having positive temperature coefficient resistivity, a pair of electrode layers provided on both major surfaces of the ceramic body so as to be opposed to each other with the ceramic body interposed therebetween, a pair of metal terminals electrically connected to the electrode layers, and a resin molded portion provided so as to cover side surfaces of the ceramic body and side surfaces of the electrode layers, the metal terminal having a connecting plate electrically connected to the electrode layer and a terminal plate opposed to the connecting plate so that a space is formed between the terminal plate and the connecting plate and connected to the connecting plate by a linking portion, and the resin molded portion being so formed as to expose an outer side surface of the terminal plate of the metal terminal and fill the space between the connecting plate and the terminal plate of the metal terminal.

Abstract: A PTC thermistor including ceramic body having a positive temperature coefficient of resistivity, a pair of electrode layers provided on both major surfaces of the ceramic body so as to be opposed to each other with the ceramic body interposed therebetween, a ceramic reinforcing plate provided on at least one of the major surfaces of the ceramic body, and an output electrode having a connecting portion for making electrical connection with the electrode layer on an inner major surface of the ceramic reinforcing plate and extending to an outer major surface of the reinforcing plate from the connecting portion.