First 2kA Compact Protection Thyristor 

Ideal for automotive, industrial, renewable energy, and ICT applications, this innovation ensures long-term reliability and protection from damaging overvoltage transients in even the harshest environments.

Littelfuse, Inc. has launched the Pxxx0S3G-A SIDACtor Protection Thyristor Series, marking the industry’s first 2 kA thyristor in the compact DO-214AB (SMC) package. Designed to provide robust protection against overvoltage transients in demanding environments, this product enables engineers to achieve higher levels of miniaturisation without compromising on performance or compliance with industry standards.

Key Features and Benefits:

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• High Surge Protection in a Compact Package:delivers 2 kA (8/20 µs) surge protection in the smallest available form factor (DO-214AB), ideal for high-power density applications.
• Enhanced Design Flexibility: Compared to traditional solutions requiring larger packages, the compact size enables integration into space-constrained designs such as IoT devices, industrial equipment, and medical power supplies.
• Reliability and Longevity: Unlike legacy solutions, the Pxxx0S3G-A series maintains its protective capabilities over time, reducing maintenance costs and ensuring long-term equipment protection.
• Automotive Grade Compliance: Fully compliant with AEC-Q101 standards, this series is perfect for automotive applications like On-Board Charger (OBC) protection and BEV/PHEV battery charging systems.

The series is designed to provide reliable protection across a wide range of industries. In Automotive & Electric Vehicle Systems, it safeguards onboard chargers, BEV/PHEV battery charging systems, and EV wall chargers from damaging surge events. In Industrial & Factory Automation, the series protects power supplies and distribution grids in harsh operating environments, ensuring uninterrupted performance. For Renewable Energy Systems, it enhances the reliability of solar inverters and energy storage systems by protecting them from fluctuating power surges. In ICT, the series shields critical equipment within uninterruptible power supplies (UPS) and high-power distribution grids, ensuring the continued operation of vital infrastructure.

Legacy solutions were often bulky and degraded over time, diminishing their effectiveness. They offer a more compact design with a 2 kA surge rating, taking up about 50% less PCB space compared to the Pxxx0FNL 3 kA SIDACtor series in the larger TO-262M package.The series is available in tape-and-reel quantities of 3,000 through authorized distributors. 

“The Pxxx0S3G-A Series combines superior surge protection with a compact form factor, offering unparalleled flexibility for designers,” said Charlie Cai, Director of Product Marketing, Automotive TVS at Littelfuse. “This product is ideal for applications exposed to high-energy surge events, such as onboard chargers, EV charging stations, industrial automation power supplies, and solar inverters.”