Difference between JFET and MOSFET Last Updated : 28 Mar, 2020 Comments Improve Suggest changes 13 Likes Like Report JFET (Junction Gate Field-Effect Transistor): JFET is a field-effect transistor and it is the three terminal devices. There are number of application of that, it can be used as switch, amplifier, etc. It is classified into two categories: N-Channel JFET and P-Channel JFET. MOSFET (Metal–Oxide–Semiconductor Field-Effect Transistor): The MOSFET is a field-effect transistor and it is a four terminal device with source(S), gate (G), drain (D) and body (B) terminals. It’s generally classified into two basic configurations: Depletion Mode MOSFET and Enhancement Mode MOSFET. Let's see the difference between Primary Key and Foreign Key: S.NO. PRIMARY KEY FOREIGN KEY 1 JFET(Junction Gate Field-Effect Transistor) is a three-terminal semiconductor device. MOSFET(Metal–Oxide–Semiconductor Field-Effect Transistor) is a four-terminal semiconductor device. 2 It can only operates in the depletion mode. It operates in both depletion mode and enhancement mode. 3 It has high input impedance on the order of 1010 ohms, therefore they are more sensitive towards input voltage signals. It offers even higher input impedance than the JFETs, theredore they are more resistive. 4 It allows the gate leakage current on the order of 10^-9 A While the gate leakage current for MOSFETs will be of the order of 10^-12 A. 5 It is relatively cheaper than MOSFETs It is expensive one. 6 These are ideal for low noise applications. These are mainly used for high noise applications. 7 These are less susceptible to damage because of the high input capacitance. These are more susceptible to damage because of the metal oxide insulator. 8 Manufacturing process of JFETs is simple. Manufacturing process of MOSFETs is complex. Create Quiz Comment S shubhamsingh10 Follow 13 Improve S shubhamsingh10 Follow 13 Improve Article Tags : Electronics Engineering Explore Electronic Devices & ComponentsAvalanche Photodiode 4 min read PIN Diode 15+ min read Schottky Diode 13 min read Solar Cell 8 min read Power Semiconductor Devices 15+ min read Digital Circuits & LogicDigital Electronics and Logic Design Tutorials 3 min read CMOS Logic Gate 4 min read CMOS Inverter 10 min read Difference Between Static CMOS and Dynamic CMOS 6 min read What is CMOS FABRICATION(P-WELL PROCESS)? 3 min read Analog & Circuit BehaviorRectifier 10 min read Diode As a Switch 11 min read Forward Bias 9 min read Schmitt Trigger 11 min read Integrated Circuits 8 min read Solid-State DevicesSolid-State Lighting 7 min read Avalanche Photodiode 4 min read Avalanche Photodiode 4 min read MOSFET Characteristics 6 min read Junction Field Effect Transistor or JFET 11 min read Communication SystemsGetting Started with Communications Engineering 9 min read Difference between Amplitude Modulation and Frequency Modulation 5 min read Difference between Pulse Code Modulation (PCM) and Delta Modulation (DM) 6 min read Frequency Division and Time division multiplexing 4 min read Signal ProcessingSignals and Systems 10 min read Fourier Transform in Circuit Analysis 10 min read Laplace Transform in Circuit Analysis 7 min read Properties of z-Transforms 4 min read What is Digital Signal Processing (DSP)? 15 min read Like