File:2N140 PNP Germanium Alloy Junction Transistor closeup.jpg

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English: Closeup of the junction in a 2N140 germanium alloy junction transistor. This transistor was introduced by RCA in 1953 (in a TO140 package), and was their first high frequency transistor suitable for usage in the IF stage of an AM radio. The crystal is reflecting a blue light; it would naturally be silver colored. This picture is focus-stacked from 312 pictures, using a 10x microscope objective
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Author John Maushammer

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current20:14, 24 November 2017Thumbnail for version as of 20:14, 24 November 20173,680 × 2,456 (2.15 MB)Morcheeba (talk | contribs)User created page with UploadWizard

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