Thyristors

- Silicon-controlled rectifier (SCR) – Passes current only after triggered by a sufficient control voltage on its gate
- TRIAC (TRIode for Alternating Current) – Bidirectional SCR
- Unijunction transistor (UJT)
- Programmable Unijunction transistor (PUT)
- SIT (Static induction transistor)
- SITh (Static induction thyristor)

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