Power Electronics

Littelfuse Pxxx0S3N SIDACtors Provide High Surge Current Overvoltage Protection in Compact Package


Littelfuse, Inc. (NASDAQ: LFUS), an industrial technology manufacturing company empowering a sustainable, connected, and safer world, announced the new Pxxx0S3N SIDACtor® Protection Thyristor Series, which safeguard exposed interfaces in industrial and ICT applications, including RS-485 data interfaces and AC/DC power supplies. Providing equipment in harsh environments with increased protection from severe overvoltage transients assists designers in complying with regulatory requirements.

Available in a compact, DO-214AB (SMC) package, the Pxxx0S3N SIDACtor series is designed to provide 3kA (8/20) high-power surge protectionwith low thermal accumulation during long-term overvoltage events. A vital advantage of the Pxxx0S3N is that the switching voltage (VS) is much lower than Gas Discharge Tubes (GDT), and on-state voltage (VT) is much lower than Metal Oxide Varistors (MOV) and Transient Voltage Suppressor (TVS) Diodes.

The Pxxx0S3N is ideal for use in various applications where hazardous environments exist, including:

  • AC and DC power lines in factory automation,industrial / ICT applications,
  • Power interface of Energy Storage Systems (ESS),
  • Solar energy systems DC/AC inverters,
  • UPS/AC high-power distribution grid,
  • Electric vehicle (EV) charging systems.

    “Ongoing product miniaturization requirements result in an increasing demand for compact, high-power-density solutions,” said Ben Huang, Senior Product Marketing Manager / Protection Semiconductor Business at Littelfuse. “Compared to MOVs and TVS diodes, the Pxxx0S3N SIDACtor is significantly smaller, and it is the first product of its size to provide such high surge current protection in such a small package.”

The Pxxx0S3N offers these key benefits:

  • First DO-214AB (SMC) sized product on the market capable of withstanding 3kA (8/20) surges.
  • Provides superior lower clamping when used in conjunction with a series MOV for power line protection.
  • Low leakage extends the lifetime reliability of a series-connected MOV.
  • Unlike GDTs/arrestors, the semiconductor-based SIDACtor does not have a wear-out mechanism over multiple transient events.


The Pxxx0S3N is available in tape and reel format in quantities of 3,000. Place ample requests through authorized Littelfuse distributors worldwide. For a listing of Littelfuse distributors, please visit Littelfuse.com.

For More Information

Additional information is available on the Pxxx0S3N SIDACtor Protection Thyristors product page. For technical questions, please contact: Ben Huang, Senior Product Marketing Manager / Protection Semiconductor Business, bhuang@littelfuse.com.


Sandhya Dhote

About Author

Sandhya Dhote is an assistant editor at Makersnow.com where she brings stories from the technology world. Sandhya is a computer science graduate and a technology enthusiast.

Leave a comment

Your email address will not be published. Required fields are marked *

You may also like

Power Electronics

element14 further enhances range of educational devices with XinaBox

element14,an Avnet Company and global distributor of electronic components, products and solutions, has signed a global franchise with XinaBox to
Element 14 is shipping advanced energy products
Electronics Industry Power Electronics

element14 now shipping Advanced Energy’s Excelsys power supplies

element14, an Avnet Company and global distributor of electronic components, products and solutions, is now stocking Advanced Energy’s Excelsys range