Heterojunction bipolar transistor and method to make a...

Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Bipolar transistor

Reexamination Certificate

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C257SE29033, C438S312000, C438S320000

Reexamination Certificate

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07368764

ABSTRACT:
A heterojunction bipolar transistor and a method of making a heterojunction bipolar transistor. The heterojunction bipolar transistor includes: a regrown emitter region; an intrinsic base region forming a junction with the regrown emitter region; and an extrinsic base region separated from the regrown emitter region. The thickness of the extrinsic base region is greater than the thickness of the intrinsic base region.

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