ST-32 Datasheet, Littelfuse

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DIACs are used to trigger Triacs and SCRs in phase control circuits for lamp dimming, universal motor speed control, and.

The HTM, HT, and ST series of bilateral trigger DIACs offer a range of voltage characteristics from 27V to 70V. A DIAC semiconductor is a full-wave or bidirectional Thyristor. It is triggered from a blocking state to a conduction state for either pol.