STMicroelectronics ACST310-8BTR TRIAC 800V 3A DPAK

STMicroelectronics ACST310-8BTR: High-Performance Logic Gate TRIAC for Demanding Applications

The STMicroelectronics ACST310-8BTR is a cutting-edge TRIAC device engineered to deliver reliable performance in industrial control systems, home appliances, and power management solutions. Designed with a sensitive gate structure and housed in a robust DPAK package, this 800V, 3A TRIAC combines advanced semiconductor technology with practical design features to meet modern engineering challenges.

Key Technical Advantages

At its core, the ACST310-8BTR boasts exceptional electrical characteristics that make it ideal for AC power control applications. With a maximum off-state voltage of 800V and an RMS on-state current capacity of 3A, this device provides robust performance even in high-stress environments. Its sensitive gate design requires only 10mA maximum gate trigger current and 1.1V gate trigger voltage, enabling direct interfacing with standard logic circuits while maintaining excellent noise immunity.

The TRIAC's thermal performance is equally impressive, operating reliably across the full industrial temperature range of -40°C to 125°C. The surface-mount DPAK package (TO-252-3) offers excellent thermal dissipation characteristics while maintaining compatibility with automated PCB assembly processes. This combination of electrical and thermal performance ensures long-term reliability in applications ranging from motor control to lighting systems.

Design Versatility and Application Scope

Engineers will appreciate the ACST310-8BTR's versatile configuration as a single TRIAC device, allowing implementation in various circuit topologies. The non-repetitive surge current rating of 20A/21A (at 50/60Hz) provides critical headroom for handling inrush currents in motor and transformer applications. With a maximum holding current of just 20mA, this device maintains stable operation even at low load conditions, making it suitable for energy-efficient designs.

The TRIAC's packaging in tape-and-reel format (TR) facilitates seamless integration into high-volume manufacturing processes. As part of STMicroelectronics' ACS™/A.S.D® product family, it benefits from the manufacturer's commitment to quality and long-term supply stability. The device's compliance with industry-standard packaging dimensions simplifies component sourcing and replacement strategies.

Performance Comparison Table

Conclusion: Reliable Power Control Solution

The ACST310-8BTR represents a significant advancement in TRIAC technology, offering designers a perfect balance of performance, reliability, and ease of use. Its combination of high voltage capability, sensitive gate drive requirements, and modern packaging makes it an ideal choice for next-generation power control applications. Whether implementing motor speed controls, smart lighting systems, or industrial automation solutions, this device provides the performance margin needed for demanding environments.

Tags: Power Control, Surface Mount Device, Industrial Automation, Logic Gate, Thermal Management