TRIAC

Key Features

• Bidirectional Switching: Capable of controlling both halves of the AC cycle (positive and negative).
• Solid-State Reliability: No moving parts means no mechanical wear, no contact arcing, and a silent operation.
• High-Speed Control: Perfectly suited for phase-angle triggering to vary the power delivered to a load.
• Logic-Level Options: Available in “Logic Level” versions that can be triggered directly by 5V microcontrollers like Arduino.
• Insulated Tab (BTA Series): Many of our models feature an internally insulated mounting tab, allowing you to bolt them directly to a heatsink without extra insulation pads.

Technical Specifications

On-State Current                                         1A (Small) to 40A+ (Industrial)

Repetitive Peak Off-State Voltage           400V, 600V, 800V

Gate Trigger Current                                   5mA (Logic Level) to 50mA (Standard)

Package Types                                             TO-92 (Low power), TO-220 (Standard), TO-3P

Peak Surge Current                                     Up to 10x rated current (for 50/60Hz cycles)

Isolation Voltage                                         Up to 2500V RMS (BTA series)

Common Applications

• Light Dimmers: Controlling the brightness of incandescent and dimmable LED lamps.
• Motor Speed Control: Adjusting the speed of AC universal motors found in ceiling fans, drills, and blenders.
• Heating Control: Managing the output of electric heaters, soldering irons, and heating elements.
• Solid-State Relays (SSR): Acting as the switching element in high-speed, long-life AC relays.
• Static Switching: Replacing mechanical contactors in noisy or high-vibration environments.