On the geometrical factor of lateral p-n-p transistors

Abstract
A simple analytical expression has been derived for the geometrical factor of lateral p-n-p transistors and is compared with the two-dimensional computer solution by Chou. Reasonable agreement has been found between the two analyses when (basewidth at the surface/junction depth) ≳ 0.5 and (epitaxial layer thickness/junction depth)\lsim 3.

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