However, MOSFET require special care in handling and has a problem of electrostatic discharge. So it is used extensively in power electronics.

So it has high efficiency than other devices. MOSFET generates very less heat loss compared to BJT at high currents. It also has applications in low power high-frequency converters.Īdvantages of using MOSFET instead of BJT is it does not have the problem of second breakdown phenomena as in BJT. The switching speed of MOSFET is very high and it has switching time in order of nanoseconds. This MOSFET is used for high-speed switching operations. A power MOSFET is a voltage controlled device. Here gate is isolated from the channel by metal oxide thin layer. It has mainly three terminal – Gate ( G), Drain ( D) and source ( S ). Mosfet is a metal oxide semiconductor device.