SIT/SITh (Static Induction Transistor/Thyristor)

SIT/SITh (Static Induction Transistor/Thyristor)

The static induction thyristor (SI-thyristor, SITh) is a thyristor with a buried gate structure in which the gate electrodes are placed in n-base region. Since they are normally on-state, gate electrodes must be negatively biased to hold off-state.

A SIT(Static Induction Transistor) is high power, high frequency device. It is a vertical structure device with short multichannels. A SIT has short channel length, low GATE series resistance, low GATE-SOURCE capacitance and small thermal resistance. It has low noise, low distortion and high audio frequency power capability. Turn-on and Turn-off time are very small typically in 0.25μs.

it has more advantages as compared to mosfet.these switches are used in induction heating application where high speed and high current is required

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