OC170: Difference between revisions
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{{Discrete component | |||
|Model=OC170 | |||
|Part_nos= | |||
|Description=alloy-diffused Germanium PNP transistor | |||
|an=an | |||
|Used_in=321;661; | |||
}}. | |||
It has a breakdown voltage of about 20 V and a maximum collector current of 10 mA. | It has a breakdown voltage of about 20 V and a maximum collector current of 10 mA. | ||
Beta is typically 150, f<sub>t</sub> about 60 MHz. | Beta is typically 150, f<sub>t</sub> about 60 MHz. | ||
| Line 10: | Line 15: | ||
==Links== | ==Links== | ||
* [https://www.vintage-radio.net/forum/showthread.php?t=5058 Thread on tin whiskers in OC170/OC171 @ vintage-radio.net] / [https://www.vintage-radio.net/forum/showthread.php?t=35171 Detail pictures] | * [https://www.vintage-radio.net/forum/showthread.php?t=5058 Thread on tin whiskers in OC170/OC171 @ vintage-radio.net] / [https://www.vintage-radio.net/forum/showthread.php?t=35171 Detail pictures] | ||
{{Part usage}} | |||
==Data== | ==Data== | ||
Revision as of 06:21, 12 December 2023
The OC170 is an alloy-diffused Germanium PNP transistor. It has a breakdown voltage of about 20 V and a maximum collector current of 10 mA. Beta is typically 150, ft about 60 MHz.
The OC170 was developed by Philips and introduced in the late 1950s.
Due to tin whiskers growing inside the case, OC170s a common source of problems on equipment of the period.
Links
Some instruments using part OC170
| Instrument | Manufacturer | Class | Model | Description | Introduced |
|---|---|---|---|---|---|
| 321 | Tektronix | Oscilloscope | 321 | Portable single channel scope | 1960 |
| 661 | Tektronix | Oscilloscope | 661 | Sampling scope | 1961 |