Littelfuse announced the launch of the Pxxx0S3H SIDACtor Protection Thyristor Series, the industry’s first 2 kA surge protection component in a DO-214AB (SMC) package. This compact solution provides robust defence against severe transient events while enabling product miniaturisation—well suited for next-generation and energy designs.
The Pxxx0S3H Series is purpose-built for AC and DC power lines in demanding environments. It provides exceptional surge immunity for applications such as industrial power supplies, automotive battery charging systems, solar inverters, UPS/AC distribution systems, and ICT equipment. With its high current handling and compact footprint, the Pxxx0S3H allows engineers to meet IEC 61000-4-5 Level 4 requirements while reducing overall device size.
“Design engineers are under increasing pressure to fit more functionality into smaller enclosures without sacrificing safety,” said Ben Huang, Director of Product Marketing Management, Protection Semiconductor Business, Littelfuse. “The Pxxx0S3H Series addresses that need with a best-in-class combination of compact packaging, surge durability, and regulatory compliance—outperforming traditional MOV- or GDT-based solutions that degrade over time.”
Key benefits:
- High surge capability in compact footprint: first 2kA (8/20 µs) surge-rated protection thyristor in DO-214AB package, significantly smaller than traditional TO-262 solutions
- Long-term reliability: the semiconductor-based design withstands repeated high-energy surge events without degrading, unlike legacy GDT or MOV-based devices
- Regulatory compliance: aids system compliance with IEC-61000-4-5 Level 4 standards for surge immunity
- Miniaturisation-ready: compact dimensions (6.22mm × 7.11mm × 2.62mm) support dense industrial, automotive, and solar energy systems designs
- Flexible deployment: it can be used standalone or combined with an MOV for tailored protection architectures
The Pxxx0S3H Series allows engineers to design smaller, more reliable, and longer-lasting systems without compromise by replacing bulky and degradation-prone protection components.
