Why are there so many different types of transistors?

Why are there so many different types of transistors?

Many transistors are very similar to one another, so much so that substitutions are fairly easy to make. Ft around 300 MHz, gain characteristics very close, etc etc.

What is BJT why is it so called compare it with other transistors?

Bipolar transistors are so named because the controlled current must go through two types of semiconductor material: P and N. The current consists of both electron and hole flow, in different parts of the transistor. The three leads of a bipolar transistor are called the Emitter, Base, and Collector.

What is difference between transistor and BJT?

There are to types of transistors which are known as Field Effect Transistors (FET) and Bipolar Junction Transistors (BJT). Therefore, a transistor is a semiconducting device which amplifies and switches input signals, and BJT is a type of transistor.

Why is BJT named so?

Bipolar transistors are a type of transistor composed of pn junctions, which are also called bipolar junction transistors (BJTs). Whereas a field-effect transistor is a unipolar device, a bipolar transistor is so named because its operation involves two kinds of charge carriers, holes and electrons.

What is transistor explain different types of transistor?

A transistor is a semiconductor device used to amplify or switch electronic signals. Transistors are broadly divided into three types: bipolar transistors (bipolar junction transistors: BJTs), field-effect transistors (FETs), and insulated-gate bipolar transistors (IGBTs).

What is the purpose of transistor?

A transistor is a semiconductor device used to amplify or switch electrical signals and power. The transistor is one of the basic building blocks of modern electronics. It is composed of semiconductor material, usually with at least three terminals for connection to an electronic circuit.

Why use a MOSFET instead of a transistor?

Originally Answered: Why MOSFET is preferred over a transistor? MOSFET is used where high swithiching frequency operation are required because MOSFET gives low switching losses. NPN transistors have electron as majority carrier and so NPN is preferred because of faster mobility of electrons.

Why emitter is heavily doped in transistor?

In most transistors, emitter is heavily doped. Its job is to emit or inject electrons into the base. These bases are lightly doped and very thin, it passes most of the emitter-injected electrons on to the collector. The collector is so named because it collects electrons from base.

What is a bipolar junction transistor (BJT)?

Bipolar junction transistors (Also known as BJTs) can be used as an amplifier, filter, rectifier, oscillator, or even a switch, which we cover an example in the first section. The transistor will operate as an amplifier or other linear circuit if the transistor is biased into the linear region. The transistor can be used as a switch

What are the different types of transistors?

Mainly we can divide the Transistor in two categories Bipolar Junction Transistor (BJT) and Field Effect Transistor (FET). Further we can divide it like below:

Why do BJT transistors produce more gain than FETs?

The transconductance of FETs is much lower. So if you use the same amount of power at the input for both a BJT and FET transistor, the BJT transistor will produce more gain. This is why BJTs are more popular for amplifier circuits. They produce gain than a FET can.

What is BJT (current controlled device)?

These are also called as current controlled devices. NPN and PNP are two prime parts of BJTs as we discussed earlier. BJT turned on by giving input to base because it has lowest impedance for all transistors. Amplification is also highest for all transistors. The types of BJT are as follows: 1. NPN Transistor: