There is provided a PTC device which allows compact connection as much as possible. Such PTC device includes a polymer PTC element (102) including (A) a polymer PTC component (112) an electrically conductive filler, and a polymer material; and (B) a metal electrode (104) placed on at least one surface of the polymer PTC component. Also present are a lead (106) of which at least a part is positioned on the metal electrode of the PTC element; a protective coating (108) which surrounds an exposed area of the PTC element, and a hardened solder paste which is present as a connection area (110) which electrically connects the metal electrode and said at least a part of the lead.