Over-temperature sensor and protector for semiconductor devices

Details Over-temperature sensor and protector for semiconductor devices Over-temperature sensor and protector for semiconductor devices

1986-12-18

1991-02-05

Hille, Rolf

357 75, H01L 2334, H01L 2336

Patent

active

049909878

ABSTRACT:
Semiconductors can be damaged by overheating and to prevent such damage, the present invention utilizes a PTC thermistor which is in a heat sensing relationship with the semiconductor. Such thermistors demonstrate a sharp rise in resistance when the body temperature approaches or reaches the anomaly temperature. Electronic circuitry is designed to be sensitive to the resistance increase of the thermistor (caused by the semiconductor's heating) and shuts off the power to the semiconductor before it overheats.

REFERENCES:
patent: 4229753 (1980-10-01), Bergeron et al.
patent: 4259685 (1981-03-01), Romano
patent: 4329701 (1982-05-01), Brenneman
patent: 4571728 (1986-02-01), Yoshikawa
patent: 4600968 (1986-07-01), Sekiya et al.
patent: 4689659 (1987-08-01), Watanabe
patent: 4727554 (1988-02-01), Watanabe
Collins-"Temperature Sensitive Devices"-Electronics World-Oct. 1964.

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