| 摘要 |
PROBLEM TO BE SOLVED: To provide a chip-type overcurrent protective element, which can suppress the increase of its resistance value due to its thermal deformation generated, when the heat of a temperature exceeding the melting point of a thermoplastic resin constituting its resistance layer is applied to it, when the repeat of its ON-OFF and its reflow. SOLUTION: The chip-type overcurrent protective element has a positive resistance-temperature characteristic bearing resistance layer 1, wherein the conductive substances are dispersed in a thermoplastic resin and has at least one positive temperature coefficient thermistor 3, having a pair of electrodes 2 wherebetween the resistance layer 1, is interposed. Further, each bonding layer 3, made of a thermoplastic resin which has no PTC characteristics and contains conductive substances, is interposed in between each principal surface of the resistance layer 1 and each electrode 2. COPYRIGHT: (C)2004,JPO
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