Littelfuse's Teccor brand "HT" and "ST" Series of bilateral trigger diacs are available with switching voltages from 27V to 70V.

A diac is a full-wave or bidirectional thyristor. Whenever the amplitude of applied voltage exceeds the breakover voltage rating of the diac, it switches from blocking- to conducting-state.

Teccor diacs feature glass-passivated junctions that ensure long term reliability and stable characteristics by creating a rugged, reliable barrier against junction contamination.

These diac specifications are for standard products. Special parameter selections such as close tolerance voltage symmetry are available. Please consult the factory for more information for custom design applications.

Notes

• Breakover voltage symmetry as close as 1 V is available from the factory on these products.
• Lead solder temperature is +230 �C for 10-second maximum; >=1/16" (1.59 mm) from case.