Comparison between MOSFET and JFET

Parameter	MOSFET	JFET
Acronym	MOSFET is Metal Oxide Semiconductor Field effect Transistor. It is a voltage controlled device. Used to switch or amplify both digital and analog signals.	JFET is Junction Field Effect Transistor. It is a voltage controlled device. Used to switch or amplify both digital and analog signals.
Symbol
Terminals	It has four terminals. Gate, source, drain and body	It has three terminals. Gate, source and drain
Types	Broadly classified into two types. Enhancement mode and depletion mode.	Classified into P channel and N channel JFET.
Mode of Operation	It operates in both depletion and enhancement mode.	It operates only in depletion mode.
Input impedance	Input impedance is very high, so they are very resistive to the input gate signal.	Input impedance is high but lower than MOSFET. It is about 1010 ohms.
Gate leakage current	It is the loss of current even when the device is OFF. The leakage current is about 10-12 A.	It is the loss of current even when the device is OFF. The leakage current is about 10-9 A.
Application	Used in high noise applications.	Used in low noise applications.
Cost	Fabrication process is complex and because of the additional metal oxide layer. Cost is high.	Fabrication process is simple and the cost is low.
Input capacitance	Input capacitance is high, so it is less susceptible to damage.	Because of the metal oxide insulator the input capacitance is low and thus it is more susceptible to damage.