Npn Transistor Schaltbild. Here the majority charge carriers are the electrons. A pnp bipolar transistor has a thin layer of n type crystals placed between two p type crystals figure 2b.
Npn epitaxial silicon transistor features switching and amplifier high voltage. A pnp transistor receives positive voltage to the emitter terminal and a negative voltage at the base terminal or rather a more negative or lower voltage than what is supplied at the emitter terminal. A bias voltage must exist between emitter and base of an npn transistor figure 2.
Forward bias for emitter junction in an npn transistor.
Npn bjts are bipolar junction transistors that are composed of 2 n material junctions and 1 p material junction. In both types the first crystal is called the emitter. Npn transistor is one of the bipolar junction transistor bjt types. Bc549 bc550 complement to bc556 bc557 bc558 bc559 and bc560 ordering information part number marking package packing method bc546abu bc546a to 92 3l bulk.
