High-Rel TVS Diodes Suit Aerospace & Military Use


Littelfuse introduced two new series of TVS Diodes for use in aerospace, military, industrial and medical applications. The SMCG-HR and SMCG-HRA series are designed to protect sensitive electronic equipment from voltage transients induced by lightning surges and other transient voltage events. They have been specially screened and sorted for use in DC line protection in avionics and other applications that demand high reliability.

Provided in DO-215AB packages, the new TVS Diodes are suitable for a broad range of aviation-related applications, including fly-by-wire flight control, engine control, power supply/distribution systems, displays and other electronic equipment in the cockpit, air conditioning and infotainment systems, radar systems, and airfield lighting.

“Once, anyone whose application demanded the use of high reliability, high power TVS Diodes upscreened to specific standards had to wait far longer for delivery and pay substantially higher costs because they had to have commercial-grade components shipped to outside subcontractor labs for extra sorting processes,” said Charlie Cai, Global Product Manager/Hi-Rel and Automotive TVS Diodes. “Now, Littelfuse can offer a broader range of off-the-shelf solutions for these applications, without the extra cost or extended lead times, as well as customisable upscreening and sorting process flows when needed.”


The devices offer many benefits including standard voltage ranges (5-120V for both uni- and bi-directional) and power ratings making them easy to design into a range of applications. Gull-wing lead wire design guarantees good manufacturability in printed circuit board and assembly (PCBA) processes. Further, a flexible selection of high reliability sorting flows, which can be customized on request, simplifies addressing a variety of applications.



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