2N2207: Difference between revisions

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The '''2N2207''' (Tek part number 151-063) is a [[Germanium transistors|germanium PNP transistor]] with
{{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  
* https://nepp.nasa.gov/whisker/anecdote/af114-transistor/index.html  


==Pictures==
==Pictures==
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