It used to be a rite of passage to be able to do the math necessary to design various bipolar transistor amplifier ...

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 ...