Compact and high-reliability low capacitance TVS diode series for avionics

Littelfuse, Inc. has released the new SMBLCE-HR/HRA, SMCLCE-HR/HRA, and SMDLCE-HR/HRA High-Reliability Low Capacitance TVS Diode Series. This ground-breaking series of TVS diodes is intended to safeguard avionics equipment from lightning and other overvoltage threats, setting a new standard in high-reliability protection for the aviation industry.

The SMBLCE-HR/HRA (600W), SMCLCE-HR/HRA (1500W), and SMDLCE-HR/HRA (3000W) series stand out for their exceptional combination of high reliability and low capacitance in compact JEDEC DO-214AA and DO-214AB packages. These diodes are meticulously designed, manufactured, and screened to eradicate early failures, providing consistent performance without degradation even under continuous surge conditions. With capacitance values as low as 50pF and power ratings ranging from 600W to 3000W, these TVS diodes offer unparalleled protection for sensitive avionics data lines.

By offering exceptional protection against overvoltage threats, these diodes ensure the reliability and safety of critical avionics equipment.

“Today’s aircraft designs are increasingly utilising new composite materials and higher data speeds,” said Charlie Cai, director of product management, Protection Business, Semiconductor Business Unit at Littelfuse. “This trend necessitates a higher level of lightning protection for all electronic equipment and electrical systems. Our new TVS diodes, with enhanced power ratings of 600W to 3000W in very compact surface-mount packages, will enable electronics engineers to design equipment that meets the high-grade regulatory requirements for protecting data lines.”

The new TVS diodes are ideal for various avionics applications, including flight control systems, FADEC, radar systems, and other high-speed data interfaces.