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Multi-emitter power transistor having emitter region arrangement for achieving substantially uniform emitter-base junction temperatures

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TLDR
A transistor having a plurality of divided emitter regions was proposed in this article, which provides a more uniform distribution of junction temperatures than a transistor with a single emitter region, where the spacing between adjacent regions at the central portion of the transistor is greater than that between adjacent peripheral regions.
Abstract
A transistor having a plurality of divided emitter regions. The spacing between adjacent emitter regions at the central portion of the transistor is greater than that between adjacent peripheral emitter regions. This arrangement provides a more uniform distribution of junction temperatures. The structure finds particular utility in power transistors.

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Journal ArticleDOI

Optimum design for a thermally stable multifinger power transistor

TL;DR: In this article, the thermal stability of multifinger bipolar transistors has been analyzed theoretically and coupled equations are solved to study the onset of instability and its dependence on the distributions of ballasting resistors.
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TL;DR: In this article, a method for fabricating a transistor having a plurality of active regions comprising spacing or shaping the emitters 20 and 22, or gates, in a non-uniform manner to provide a substantially constant temperature over an active region of the transistor is disclosed.
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TL;DR: In this paper, a high-power solid-state transistor structure comprised of a plurality of emitter or gate fingers in a uniform or non-uniform manner to provide improved high power performance is disclosed.
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TL;DR: In this article, a system for limiting power dissipation in a power transistor to less than a destructive level is described, which includes a sense emitter positioned close to the power emitter in the base and a reference emitter at a remote position that would not be heated by the heat dissipated by the power e cient.
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Integrated circuit power transmission array

TL;DR: In this article, a power transistor array integrated circuit includes an array of transistors, each having an electrode connected in common to a conductive line forming a part of the integrated circuit.