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SITH is also known as ________

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SITH is also known as ________

(a) Field controlled diode

(b) Field controlled rectifier

(c) Silicon controlled diode

(d) Silicon controlled rectifier

I got this question during an interview.

My question is based upon Power BJTs topic in chapter Differential and Multistage Amplifiers of Electronic Devices & Circuits

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The correct option is (a) Field controlled diode

To elaborate: The static induction thyristor (SITHs) is a thyristor with a buried gate structure in which the gate electrodes are placed in n-base region.  They are normally on-state, gate electrodes must be negatively biased to hold-off state. It is a self controlled GTO like device. Hence it is sometimes called the field controlled diode.

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