2N2207: Difference between revisions
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{{Discrete component | |||
|Manufacturer= | |||
|Model=2N2207 | |||
|Part_nos=151-063,151-0063-00 | |||
|Description=germanium PNP transistor | |||
|Used_in=3B1;3B3;3S76;321A;547; | |||
}} with | |||
* | * f<sub>t</sub>= 140 MHz | ||
* | * I<sub>C</sub> (max) = 50 mA | ||
* | * h<sub>fe</sub> (min) = 36 | ||
The 2N2207 is used in a variety of | The 2N2207 is used in a variety of 1960s Tektronix equipment including the [[3B1]], [[3B3]], [[3S76]], [[321|321A]], and [[547]]. | ||
Due to [[Germanium transistors | tin whiskers growing inside the case]], 2N2207s are a common source of problems on equipment of the period. | |||
For more information, see the [[Germanium transistors]] page. | |||
In most (but not all) circuits, a failed 2N2207 can be replaced with a modern silicon PNP transistor. | |||
Such a replacement may need to involve several coupled transistors/diodes (see link for an example). | |||
{{Part usage}} | |||
==Links== | |||
* [https://groups.io/g/TekScopes/message/35340 321A 2N2207 transistor replacement] | |||
* https://nepp.nasa.gov/whisker/anecdote/af114-transistor/index.html | |||
==Pictures== | |||
<gallery> | |||
2n2207 1.JPG | |||
2n2207 2.JPG | |||
2n2207 3.JPG|2N2207 with pins labeled | |||
2n2207.jpg | |||
</gallery> | |||
[[Category:Transistors]] | |||
Latest revision as of 16:14, 8 January 2024
The 2N2207 (P/N 151-063,151-0063-00) is a germanium PNP transistor with
- ft= 140 MHz
- IC (max) = 50 mA
- hfe (min) = 36
The 2N2207 is used in a variety of 1960s Tektronix equipment including the 3B1, 3B3, 3S76, 321A, and 547.
Due to tin whiskers growing inside the case, 2N2207s are a common source of problems on equipment of the period. For more information, see the Germanium transistors page.
In most (but not all) circuits, a failed 2N2207 can be replaced with a modern silicon PNP transistor. Such a replacement may need to involve several coupled transistors/diodes (see link for an example).
Some instruments using part 2N2207
| Instrument | Manufacturer | Class | Model | Description | Introduced |
|---|---|---|---|---|---|
| 321A | Tektronix | Oscilloscope | 321A | Portable single channel scope | 1964 |
| 3B1 | Tektronix | Plug-in | 3B1 | 10 MHz time base plug-in | 1962 |
| 3B3 | Tektronix | Plug-in | 3B3 | Time Base plug-in | 1962 |
| 3S76 | Tektronix | Plug-in | 3S76 | Dual Channel Sampling plug-in | 1962 |
| 547 | Tektronix | Oscilloscope | 547 | 50 MHz oscilloscope | 1964 |
Links
- 321A 2N2207 transistor replacement
- https://nepp.nasa.gov/whisker/anecdote/af114-transistor/index.html
Pictures
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-
-
2N2207 with pins labeled
-
