Difference between JFET and MOSFET

JFET (Junction Field Effect Transister)

 MOSFET ( Metal Oxide Field Effect Transistor)

It is symbol diagram of MOSFET ( Metal oxide semiconductor field effect transistor.
which three terminal
1. Gate
2. Drain
3. Source

1. In JFET gate biasing is reverse biasing.

 In MOSFET is forward biasing or reverse biasing

The mode of operation of JFET is depletion mode

In case of MOSFET mode operation is both depletion mode and enhancement mode.

2. The input impedance of JFET is very high as compare to MOSFET.

The input impedance of MOSFET is low as compare to JFET.

3. The Drain resistance of JFET is higher than MOSFET. It is higher than MOSFET.

The Drain resistance of lower that JFET. It is main difference between F=JFET and MOSFET.

4. The manufacturing compatibility of JFET is less easy than MOSFET

It is easy to manufacture

5. The gate current leakage is Nano ampere

In the order of bico ampere

6. Compatibility to ic fabrication is suitable

Compatibility to IC fabrication is more suitable than JFET.

7. In JFET power classification is more.

In MOSFET power classification is less.

8. Its gate margin is 0.1 to 10 mA/V.

Its gate margin is 0.1 to 20 m/a/V.

9. JFET has not p-n junction which have high resistivity.

It is a voltage controlled field effect has a metal oxide gate electrode. Which is electrically insulated from a channel n-type or p-type by very thin layer of insulating material?

10. The JFET is normally ON device. it is most important difference between JFET and MOSFET

The MOSFET is normally off devices.