Triac The Triac is a thyristor, a four layer device, that is essentially a reversed parallel pair of SCRs: Unlike an SCR, though, a triac is a bidirectional thyristor -- it can conduct electricity in both directions. One disadvantage of this is that triacs require a fairly high current pulse to turn them on. See also SCR. Meanwhile, AMS has a good Triac tutorial page here. For an example SCR's data sheet, see the 2N5060 in the BEAM Reference Library's Datasheet Collection.

Legalities    Page author: Eric Seale   This page was last updated on This work is licensed under a Creative Commons License.