Title:
ALLOY-TYPE THERMAL FUSE AND MATERIAL FOR THERMAL FUSE ELEMENT
Document Type and Number:
Japanese Patent JP3953947
Kind Code:
B
Abstract:
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.
Inventors:
Tanaka, Yoshiaki
Application Number:
JP2002000361701
Publication Date:
May 11, 2007
Filing Date:
December 13, 2002
Export Citation:
Assignee:
UCHIHASHI ESTEC CO LTD
International Classes:
C22C12/00; C22C30/04; H01H37/76; H01H69/02; (IPC1-7): C22C12/00; C22C30/04; H01H37/76; H01H69/02