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{{Discrete component | |||
|Manufacturer= | |||
|Model=2N2207 | |||
|Part_nos=151-063,151-0063-00 | |||
|Description=germanium PNP transistor | |||
|Used_in=321A;3B1;3B3;547; | |||
}} with | |||
* f<sub>t</sub>= 140 MHz | * f<sub>t</sub>= 140 MHz | ||
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The 2N2207 is used in a variety of 1960s Tektronix equipment including the [[3B1]], [[547]], [[321|321A]], and [[3B3]]. | The 2N2207 is used in a variety of 1960s Tektronix equipment including the [[3B1]], [[547]], [[321|321A]], and [[3B3]]. | ||
Due to [[Germanium transistors|tin whiskers growing inside the case]], 2N2207 are a common source of problems on equipment of the period. | Due to [[Germanium transistors|tin whiskers growing inside the case]], 2N2207 are a common source of problems on equipment of the period. | ||
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Such a replacement may need to involve several coupled transistors/diodes (see link for an example). | Such a replacement may need to involve several coupled transistors/diodes (see link for an example). | ||
{{Part usage}} | |||
==Links== | ==Links== | ||
* [https://groups.io/g/TekScopes/message/35340 321A 2N2207 transistor replacement] | * [https://groups.io/g/TekScopes/message/35340 321A 2N2207 transistor replacement] | ||
* | * https://nepp.nasa.gov/whisker/anecdote/af114-transistor/index.html | ||
==Pictures== | ==Pictures== |