| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable overcurrent protective element which maintains a low-resistance characteristic at normal temperature and a high- resistance characteristic at high temperatures and moreover has a low resistance at the normal temperature. SOLUTION: An overcurrent protective element is provided with many particles, each composed of internal particles formed by granulating and molding a second conductive material having a high resistance and a coating section coating the surface of the internal particle and made of a first conductive material. The element is manufactured by compression molding of the coated particles into a flat body having a thickness of 0.01-100μm. At a normal temperature, the element shows a low-resistance characteristic 1 of the conductive polymer constituting the coating sections, but at a high temperature, a high resistance characteristic 2 of a high-resistance material constituting the internal particles becomes apparent.
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