Transistor package having a series connected thermistor for prot

Details Transistor package having a series connected thermistor for prot Transistor package having a series connected thermistor for prot

1997-06-16

1998-06-09

Jackson, Jr., Jerome

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Temperature

257577, 257578, 361106, 338 22R, 323312, H02H 308, H02H 504, H01L 31058

Patent

active

057639299

ABSTRACT:
A transistor package includes a power bipolar transistor chip having a thermistor on and electrically connected to a bipolar transistor collector electrode. The thermistor exhibits a positive thermal coefficient (PTC) resistance characteristic and is series connected to the transistor collector. Collector current is interrupted by thermistor response to heat generated during excess transistor collector current events to thereby avoid thermal destruction of the device.

REFERENCES:
patent: 3444399 (1969-05-01), Jones
patent: 3708720 (1973-01-01), Whitney et al.
patent: 3809928 (1974-05-01), Evans
patent: 4117508 (1978-09-01), Koenig
patent: 4937696 (1990-06-01), Yoshino et al.
patent: 5227946 (1993-07-01), Jacobs et al.

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