In the early days, PNP bipolar transistors were common, but the bulk of circuits you see today use NPN transistors. As [Aaron Danner] points out, many people think PNP transistors ...

The condition is just reversed in the case of a PNP transistor as shown in Fig.4. The base-emitter junction of T1 forward biased and the base-collector junction is reverse biased. In this state,T1 ...

Sometimes we need a transistor with a different characteristic than the normal one for max voltage and current of the collector, maximum power dissipation and amplification. This can be done by using ...

Because of electron mobility, NPN transistors are better suited for tiny amplifier circuits that employ BJTs. The frequency response of an NPN transistor is superior to that of a PNP transistor.