Can two PN junction diodes placed back-to-back work as a PNP transistor?
Can two PN junction diodes placed back-to-back work as a PNP transistor?
Ans: No, the middle region of a transistor is known as the “base region,” and it has a lower doping level and thickness than the emitted and collector regions. When we stack the two PN junction diodes, the doping level and thickness of the middle/base region cannot be kept at the required level.