Electronic part such as PTC thermistor and casing for the same w

Details Electronic part such as PTC thermistor and casing for the same w Electronic part such as PTC thermistor and casing for the same w

1997-03-12

1998-06-02

Walberg, Teresa J.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

338324, 338225D, 338234, 337183, 337184, H01C 710

Patent

active

057606765

ABSTRACT:
In a positive temperature coefficient thermistor, a terminal holding member is provided between an outer casing and an elastic terminal electrically connected to the semiconductor ceramic element. The terminal holding member is formed of a thermoplastic resin having a low softening point. Consequently, when an abnormally large amount of heat is generated in the semiconductor ceramic element, the terminal holding member melts and deforms, causing the semiconductor ceramic element to be separated and thereby electrically disconnected from the terminal.

REFERENCES:
patent: 3914727 (1975-10-01), Fabricius
patent: 3996447 (1976-12-01), Bouffard et al.
patent: 4031497 (1977-06-01), Ozawa
patent: 4635026 (1987-01-01), Takeuchi
patent: 4894637 (1990-01-01), Yamada et al.
patent: 5142265 (1992-08-01), Motoyoshi et al.
patent: 5153555 (1992-10-01), Enomoto et al.
patent: 5382938 (1995-01-01), Hansson et al.
German Office Action dated Dec. 12, 1996 and English translation.

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