Disadvantage of BJT and FET
Following are some of the disadvantage of BJT and FET :
Disadvantage of BJT
- BJT required large chip area in fabrication .
- Power loss is high in BJT.
- It is very temperature sensitive.
- Noise produced is large.
- It is more sensitive to radiations.
Disadvantage of FET
Following are the some of the disadvantage of FET
- FET are costly.
- FET have low transconductance.
- In high frequency FET cannot perform well.
- FET have small gain bandwidth.
Difference Between BJT and FET
The transistor is a three-terminal semiconductor device, it is an active device that is used in most of the electronics devices. Transistors can be used as insulators and as conductors as needed. we can use a transistor as a switch and as an amplifier. It can be used with other circuit elements and can be able to amplify current and voltage. We can classify transistors into two types that is Bipolar, and Field Effect Transistor.
BJT is a three-terminal device, it has two PN junctions. It is mostly used analog electronic device because of its high current gain. FET is a very important component in today’s electronic devices. FET is a type of device in which electric fields are used to control the flow of charges or current flowing through a channel. Due to its high input impedance, low output impedance, and high gain capacity, they are widely used in electronic devices.
BJT and FET both are used in many different devices and they have many different characteristics that make them different from each other. In this article, we will go through all the things that make them different and we will get the overview of BJT and FET.
Table of Content
- What is BJT
- What is FET
- BJT vs FET operation comparison
- Difference Between BJT and FET
- Applications of BJT
- Applications of FET
- Conclusion
- FAQs