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Home > Intermediate Electronics > JFET > Advantages
Advantages of JFET

FET has high input resistance (approx. in order of 100-M ohms for a JFET and 1010 to 1015 ohms for the MOSFET). Thus, the FET is a voltage-controlled device, like a tube, and not current-controlled, like a conventional transistor.

It shows a high degree of isolation between input and output.

All field-effect transistors are unipolar rather than bipolar devices. That is, the main current through them is comprised either of electrons through an N-type semiconductor or holes through a P-type semiconductor while conventional transistor is a bipolar device relying upon two types of charge carrier, electrons and holes.

The FET is less noisy than a bipolar transistor.

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