TRIAC Product Introduction – Quadrant Operation and Gate Sensitivity Options

Component Overview

TRIAC devices are bidirectional thyristors used for AC power control in switching and phase-angle regulation applications. Different gate structures and quadrant operation modes determine triggering behavior and suitability for various control circuits.

Product Series

• BT138-800E – TRIAC
• BTA16-800B – Four-quadrant TRIAC
• BT134-600E – Sensitive gate TRIAC
• BT139-800T – Three-quadrant TRIAC

Electrical Function

TRIAC devices enable bidirectional current conduction when triggered, allowing control of AC loads such as motors, heaters, and lighting. Gate sensitivity and quadrant capability influence compatibility with low-current control circuits and opto-isolated drivers.

Applications

• AC power switching
• Phase-angle control for dimmers
• Motor speed regulation
• Heating element control

Design Considerations

• Select gate sensitivity based on driver current capability
• Verify quadrant operation for triggering method
• Confirm voltage and current ratings for load conditions
• Evaluate thermal management under continuous conduction

Detailed electrical parameters and triggering characteristics are available in the individual datasheets for each TRIAC model.

For technical specifications and application support, please contact:
Sales: sales@suntan.com.hk
General: info@suntan.com.hk