| 摘要 |
PROBLEM TO BE SOLVED: To provide an alloy-type thermal fuse having an actuation temperature of 75°C to 120°C, which employs a fuse element of a Bi-In-Sn alloy and assures thermo-cycle resistance, aging resistance both for a long period, and adequate operating characteristics. SOLUTION: The fuse element has an alloy composition in the area of 15% or more but less than 37% In, 5% or more but 28% or less Sn, and the balance Bi, though excluding the area of Bi±2%, and In and Sn±1% all around basing points of 57.5% Bi-25.2% In-17.3% Sn and 54.0% Bi-29.7% In-16.3% Sn, which are three component eutectic points of a Bi-In-Sn alloy. COPYRIGHT: (C)2004,JPO&NCIPI
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