2N301: Difference between revisions

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|Used_in=502;502A;
|Used_in=502;502A;
}} in a TO-3 package, used in the regulated pre-amp heater power supply of the [[502]].
}} in a TO-3 package, used in the regulated pre-amp heater power supply of the [[502]].
RCA announced their first Ge PNP TO-3 types, the 2N301 and 2N301A, in early 1957.


The AD149 is similar.
The AD149 is similar.
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{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Collector voltage | max. −40 V }}
{{Spec | Collector voltage | max. −40 V }}
{{Spec | Collector current | max. –3 A }}
{{Spec | Collector current | max. –3 A }}
{{Spec | Power dissipation | max. 11 W }}
{{Spec | Power dissipation | max. 11 W }}
{{Spec | Current gain (hFE) | typ. 70 at 1 A collector current }}
{{EndSpecs}}
{{EndSpecs}}


==Links==
==Links==
* [[Media:2N301 datasheet.jpg|2N301 datasheet]]
* [[Media:2N301 datasheet.jpg|2N301 datasheet]]
* [[tube:2n301|2N301]] @ radiomuseum.org
* [https://www.semiconductormuseum.com/Transistors/LectureHall/JoeKnight/JoeKnight_EarlyPowerTransistorHistory_RCA_Page3.htm RCA 1950s Germanium Power Transistors] @ semiconductormuseum.com
* [http://semiconductormuseum.com/Transistors/RCA/OralHistories/Kalish/Kalish_Index.htm Iz Kalish oral history] @ semiconductormuseum.com


{{MissingPics}}
==Pictures==
<gallery>
2N301 box.jpg
</gallery>


[[Category:Transistors]]
[[Category:Transistors]]
[[Category:Introduced in 1957]]

Latest revision as of 05:10, 24 July 2024

The 2N301  (P/N 151-0001-00) is a germanium PNP power transistor in a TO-3 package, used in the regulated pre-amp heater power supply of the 502.

RCA announced their first Ge PNP TO-3 types, the 2N301 and 2N301A, in early 1957.

The AD149 is similar.

Some instruments using part 2N301

Instrument Manufacturer Class Model Description Introduced
502 Tektronix Oscilloscope 502 1 MHz dual beam differential scope 1958
502A Tektronix Oscilloscope 502A 1 MHz dual beam differential scope 1963
  • 502: V647 (sic – still using "V" prefixes for transistors in 1958)
  • 502A: Q647 = 2N301 in schematic, parts list says "use 2N2148 (151-0137-00)"

Key Specifications

Collector voltage max. −40 V
Collector current max. –3 A
Power dissipation max. 11 W
Current gain (hFE) typ. 70 at 1 A collector current

Links

Pictures