BJT – Bipolar Junction Transistors

A Bipolar junction transistor, commonly known as BJT, is a Si or Ge semiconductor device that is structured like two p-n junction diodes connected back to back. It has two outer regions which are the emitter and collector and another region in the middle known as the base. The bipolar junction transistor is called bipolar … Read more

Transistors – Learn all about transistors

A transistor is an electronic semiconductor device that is used in the circuit to control, regulate and amplify electrical voltage or current signals. Nowadays, silicon is predominantly used as the material for the construction of transistors. In some cases, a combination of trivalent and pentavalent elements, like gallium−arsenide are also used. By interconnecting and embedding … Read more

Diode ratings – How to understand a diode datasheet?

Datasheets released by diode manufacturers contain a number of diode ratings. In order to select diodes for an application, it is important to understand all the ratings listed in the datasheets. Here is a list of all diode ratings that you must remember always. Diode ratings Forward voltage drop (Vf) The voltage drop measured across … Read more

PN Junction Diodes

What is a diode? A diode is an electrical component that allows the current to flow in only one particular direction. Diodes are made up of silicon and germanium. They are used to protect the circuit by limiting the voltage and transforming the AC voltage into DC voltage. There are many types of diodes and … Read more

Zener diodes – Operation, Symbol and V-I Characteristics

What are zener diodes? Zener diodes are silicon semiconductor devices that can allow the passage of current in both forward and reverse directions. Unlike p-n junction diodes, they are designed in such a way to handle the reverse breakdown voltage without damaging themselves. They are heavily doped than normal p-n junction diodes, thereby forming a … Read more