RESISTIVE TEMPERATURE FUSE

PROBLEM TO BE SOLVED: To stabilize the characteristics of a resistance temperature fuse by covering the electrodes of a first structure, the extended ends of lead wires, and the flux of a second structure with an insulating member. SOLUTION: Electrodes 2, 3 are screen printed using a silver paste on...

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Bibliographic Details
Main Authors FUJII KENZO, WACHI TAKESHI
Format Patent
LanguageEnglish
Published 06.06.1997
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
RESISTORS
SELECTORS
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Summary:PROBLEM TO BE SOLVED: To stabilize the characteristics of a resistance temperature fuse by covering the electrodes of a first structure, the extended ends of lead wires, and the flux of a second structure with an insulating member. SOLUTION: Electrodes 2, 3 are screen printed using a silver paste onto a first substrate 1 made of ceramics. A first structure comprises a resistor 4 formed between the electrodes 2 into a thick film using a resistance paste made from ruthenium oxide, both ends of the resistor 4 overlapping with part of the electrode 2. A second structure is formed by providing a recess 6 formed by a through hole where the end of the silver electrode 3 on the substrate 1 is exposed onto a second substrate 5 made of ceramics, then providing notches whereby the electrodes 2, 3 are exposed, and providing a beam part between the electrodes 2, 3. The first and second structures are stacked and molded integrally with each other using a green sheet, and sintered. Lead wires 8, 9 are soldered and secured to the externally exposed electrodes 2, 3. A rod- shaped soluble body 10 is secured at each end to the silver electrode 3 on the substrate 1, is filled with flux 11, and covered with a resin together with part of each lead wire 8, 9.
Bibliography:Application Number: JP19950310215