| 摘要 |
PROBLEM TO BE SOLVED: To realize an alloy type thermal fuse which does not contain lead and cadmium causing an environmental problem and has excellent operating reliability in the range of 135 to 140°C. SOLUTION: The lead-free alloy type thermal fuse is obtained by using a low melting point fusible alloy as a fuse element, connecting terminal leads to both ends of the low melting point fusible alloy, inserting the same into a case of an insulation and sealing the end parts where the terminal leads are routed from the case of an insulation. The low melting point fusible alloy has an alloy composition comprising, by weight, 53 to 58% Bi, 0.5 to 5% Cu and 0.1 to 4% In, and the balance Sn. COPYRIGHT: (C)2004,JPO
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