What is the difference between JFET and MOSFET

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What is the difference between JFET and MOSFET?

Analog and Digital Electronics


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1. In JFET the channel is already present so it is called normally ON device. MOSFET is a normally OFF device because initially there is no channel, on applying Vgs channel get enhances.
2. JFET is type of junction/ depletion FET. MOSFET is a enhancement type FET but it can also work in depletion mode.
3. MOSFET has higher input impedance as compared to JFET ecause of SiO2 layer at the input stage so input current Ig=o but If current is not zero for JFET.
4. The propagation delay is less in JFET as compared to MOSFET because  MOSFETs have more capacitive effects.


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