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2N2907

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The 2N2907 is a small PNP BJT transistor used for general purpose low-power amplifying or switching applications. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds. These transistors have an enduring popularity.

It is a 1-amp, 50 volt, 300 milli-watt transistor capable with an Ft of 100 Megahertz, with a Beta of at least 100. It's used in a variety of analog amplification and switching applications.


References

  1. "2N2907 2N2905 GENERAL PURPOSE AMPLIFIERS AND SWITCHES". SGS Thomson Microelectronics.
  2. Rudolf F. Graf and William Sheets (2001). Build your own low-power transmitters: projects for the electronics experimenter. Newnes. p. 14. ISBN 9780750672443. The 2N2222, 2N2905, and 2N3055 devices, for example, which date back to the 1960s but have been improved, are still useful in new designs and are still popular for experimenters.

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