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List the difference between BJT and FET transistors?

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Answer:

list the difference between JFET and BJT

IMPEDENCE IS HIGH COMPARED THEN BJT. JFET IS VOLTAGE DRIVEN DEVICE WHILE AS BJT CURRENT DRIVEN DEVICE. IN JFET THERE ARE NO JUNCTIONS AS IN ORDINARY TRANSISTOR, CONDUCTION IS THROUGH AN n-TYPE OR p-TYPE SEMICONDUCTOR MATERIAL. FOR THIS REASON NOISE LEVEL IS VERY SMALL.
== Answer == bjt is a bipolar device involving both types of charge carriers ,where as fet is a unipolar device involving only one type of charge carrier.the main difference is that bjt is current controller device and fet is voltage controller device
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fet has high input impedance compared to bjt
fet has low noise compared to bjt.
fet has low power dissipation compared to bjt

Fet has better temp stability as compared to bjt.
Bjt is more temp sensitive than fet

Bjt has better driving capability (fanout) than fet
and bjt also has has high speed switching compared to fet

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Contributor:

Subrahmanya

First answer by RAPHAELKIPLANGAT. Last edit by Subrahmanya Hegde. Contributor trust: 0 [recommend contributor ]. Question popularity: 34 [recommend question].

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