DB3 Diac Trigger Diode 2A ديود دياك

DB3 is a commonly used DIAC (Diode for Alternating Current), a bidirectional semiconductor switch that conducts only after its breakover voltage is exceeded. The DB3 is widely employed as a trigger device for TRIACs and thyristors in AC power control applications, providing consistent and repeatable firing behavior in lamp dimmers, motor speed controls, and other phase-control circuits.

This component is specified by its breakover characteristics and is used where a symmetric triggering element is required for AC switching circuits. Consult the manufacturer's datasheet or variant-specific documentation for full electrical characteristics, mounting and handling recommendations, and to confirm suitability for your application.