Patent
1980-01-16
1982-03-09
Rosenberger, R. A.
357 35, 357 46, H01L 2990
Patent
active
043192572
ABSTRACT:
A low thermal coefficient NPN bipolar transistor includes a reverse biased buried zener diode formed in the interior of an emitter ring. Thermal compensation results from the symmetry of the base region and the concentric base contact, emitter and collector contact rings about the buried zener diode. A P type region extends the depth of the base region below the zener diode to prevent reach through of the cathode to the collector.
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patent: 3440715 (1969-04-01), Seng
patent: 3567965 (1971-03-01), Weinerth
patent: 4035827 (1977-07-01), Wheatley
patent: 4138690 (1979-02-01), Nawa et al.
Harris Corporation
Rosenberger R. A.
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