2N140_PNP_Germanium_Alloy_Junction_Transistor_closeup.jpg
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Summary
| Description |
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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| Date | |
| Source | Own work |
| Author | John Maushammer |
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This image was uploaded as part of Wiki Science Competition 2017 . |