A Planet Analog article, “2N3904: Why use a 60-year-old transistor?” by Bill Schweber, inspired some interest in this old transistor and how it’s commonly used, and if any uncommon uses might exist.

The hybrid STE59DE100 ESBT (emitter-switched bipolar transistor) STE50DE100 has a collector-source voltage of 1 kV and collector currents as high as 50A. The product combines bipolar and MOSFET ...

Originally, the venerable three-terminal linear regulator featured a bipolar junction transistor emitter-follower output that exhibited very low output impedance. Many of today's applications demand ...

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