Types of Field Effect Transistor: A Very Quick Overview

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What is FET? or Field Effect Transistor?

There are several types of field effect transistors (FETs), each with its unique structure and operating characteristics. The main types of FETs include:

Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET): MOSFETs are the most common and widely used types of field effect transistor. They have a metal gate insulated from the semiconductor channel by a thin layer of oxide (usually silicon dioxide). MOSFETs are further classified into two subtypes:

Enhancement Mode MOSFET (E-MOSFET): Requires a positive gate voltage to create a conducting channel between the source and drain terminals.

Depletion Mode MOSFET (D-MOSFET): Has a conducting channel by default and requires a negative gate voltage to “deplete” or reduce the channel conductance.

Junction Field Effect Transistor (JFET): JFETs have a junction between the semiconductor channel and the gate terminal. They are available in two types of field effect transistors:

N-Channel JFET: The channel is composed of n-type semiconductor material, and the gate terminal is p-type.

P-Channel JFET: The channel is composed of p-type semiconductor material, and the gate terminal is n-type.

Insulated Gate Bipolar Transistor (IGBT): IGBTs combine the features of MOSFETs and bipolar junction transistors (BJTs). They are considered to be the important types of field effect transistors. They have a MOSFET input and a BJT-like output, allowing them to handle high voltage and high current levels. IGBTs are commonly used in power electronics applications.

High-Electron-Mobility Transistor (HEMT): HEMTs, also known as HFETs (heterostructure types of field effect transistor) or MOSFETs (modulation-doped field effect transistors), are designed to provide high electron mobility. They are typically made using compound semiconductor materials and find applications in high-frequency and microwave circuits.

Fin Field Effect Transistor (FinFET): FinFETs are a type of 3D transistor structure that overcomes certain limitations of traditional planar MOSFETs. They have a fin-like channel, enabling better control of the current flow. FinFETs are commonly used in advanced integrated circuits (ICs) to achieve higher performance and energy efficiency.

These are some of the main types of field effect transistors. Each type has its advantages and applications, catering to specific requirements in various electronic circuits and systems.

Working of a FET (Field Effect Transistor)

Symbols of Field Effect Transistor
Symbols of Field Effect Transistor

Classification of types of field effect transistor (FET)

Construction of Junction Types of field effect Transistor (JFET)

Construction of Junction Types of field effect Transistor (JFET)

Circuits Representations of N-Channel & P-Channel JFET

Circuits Representations of N-Channel & P-Channel JFET
Circuits Representations of N-Channel & P-Channel JFET

Working of Junction Field Effect Transistor(JFET)

Working of Junction Field Effect Transistor(JFET)
Working of Junction Field Effect Transistor(JFET)

Metal Oxide Semiconductor Types of Field effect Transistor (MOSFET)

Metal Oxide Semiconductor Types of Field-effect Transistor (MOSFET)
Metal Oxide Semiconductor Types of Field effect Transistor (MOSFET)

Working and Operation of MOSFET

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