Transistors, Bipolar (BJT) Transistors, 2STN1550, STMicroelectronics

 A full selection of bipolar transistors from many transistor manufacturers including bipolar junction transistor (bjt) switch, insulated gate, NPN or high voltage transistor for your circuits. Also explains what a bipolar transistor is.

https://www.futureelectronics.com/c/semiconductors/discretes--transistors--bipolar-transistors/products