A bipolar junction transistor (BJT) has three terminals connected to three regions of doped semiconductors. The PNP (Positive-Negative-Positive) transistor has two diodes connected to each other.
A bipolar junction transistor (BJT) has three terminals connected to three regions of doped semiconductors. The PNP (Positive-Negative-Positive) transistor has two diodes connected to each other. The diode on the left is called a collector base diode and the diode on the left is called an emitter base diode.