A very compact solution for switching loads on AC power lines
Not limited by electromechanical ageing contingencies, triacs have a very long lifespan within circuits fully respecting specification boundaries.
With a voltage range from 600 to 800 V and up to 1200 V for certain industrial devices, ST's portfolio covers medium-power AC loads with 1 to 50 A triacs.
With a range of driveable AC loads from 120 to 500 V, the list of circuits benefiting from ST triacs includes dimmers, all types of AC mains on-off switches, home or office copy/printer appliances, as well as industrial motor starters or SSRs, gardening tools, automated irrigation systems and a wide variety of automation controllers for factories, buildings and homes:
- The high-voltage triacs are dedicated to industrial and three-phase mains switching applications.
- Designed to ensure high switching performance in circuits that need space optimization, our 8T triacs are ideal for applications with high EMI constraints while our 6H triacs and 8H triacs target applications with high thermal constraints
- Our standard and snubberless™ triacs retain the exhaustive gate drive possibilities and packages covering all power mains on/off and phase angle switching needs.
- Featuring overvoltage protection functions, our ACS™ AC switches include highly inductive load switching capabilities for home and irrigation appliances including solenoid actuators and pumps, while our ACST triacs are designed for higher loads in appliances or equipment plugged in 24/7.
Triacs belong to our STPOWER family.
Featured Videos
The STEVAL-SCR002V1 introduces a simple and innovative AC-DC front-end circuit that allows the designer to perform an inrush current limitation in any converter with input rectifier bridge topologies.
ST’s 8H Triacs have been designed for Industrial, Building, Residential, Appliances. Based on the new ST’s technology, the 8H Triacs are able to work at 800V & 150°C without compromise. It makes 8H Triacs the right choice to run in very hot confined electronic environment and improve the reliability of your system. Thanks to 8H Triacs robust dynamic turn-off commutation and high noise immunity at high temperature you can reduce your system size while increasing functional safety.
Ease your transition to surface-mount Triacs with our extended D²PAK portfolio
Discover our High-temperature Triacs and Standard and Snubberless Triacs in D²PAK.
800 V T-series triacs outrun competition for load control
800 V T-series high-performance triacs are designed for AC loads in industrial control and home appliances, enabling innovative and safe AC load control. With immunity (dV/dt) up to twice as high and commutation capability (dI/dt)c up to 5 times as good as state-of-art Triacs, this high-performance 800 V T-series triacs enables circuits to be more robust to EMI and loads to be fully controlled, with no disturbances. Its low gate current down to 10 mA helps optimize the power supply and allows direct drive capability through a single resistance between the microcontroller and Triac. 800 V T-series triacs are housed in TO-220AB, TO-220FPAB and now in D2PAK.
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Power Supply Design Tool
LED Lighting Design Tool
Digital Power Workbench
Power Tree Designer
AC Switches Simulator
Rectifier Diodes Simulator
STPOWER Studio
Twister Sim
TVS Simulator
Estimate
Active Filters
Comparators
Low side Current Sensing
High side Current Sensing
NFC Inductance
UHF Link Budget
