TVS diodes target DC line protection in aviation electronics

Both diode series have undergone 100% screen sorting and the SMBJ-HR has also undergone Group B (surge test, HTRB, and electrical) test sorting. The military screening process flow ensures high reliability to meet the requirements of aerospace, military, industrial and medical applications. With standard voltage ranges and power ratings, the high-reliability TVS diodes can easily be incorporated into circuit designs in compliance with the RTCA/DO-160 Standard. Typical end applications include aeroplane sensors, avionics computers, fly-by-wire flight control systems, cockpit electronic equipment and airport landing aid systems, as well as industrial applications within the energy industry.

The customisable process options for the TVS diodes include visual monitor in process, single wafer lot source, high temperature storage life, X-ray inspection, reflow, temperature cycle test, 3 Sigma & dynamic test, customised Vbr/lr, additional sorting, HTRB, H3TRB, good traceability and labeling. The selection of high reliability sorting flows, which can be customised on request, provides the flexibility to address a variety of applications.

Charlie Cai, Global Product Manager, Hi-Rel and Automotive TVS Diodes, Littelfuse, commented: “Once, obtaining high-reliability TVS diodes required shipping commercial-grade components to outside subcontractor labs to perform the extra sorting processes. That meant the customer had to accept a substantially longer wait for delivery and significantly higher component costs. Now that Littelfuse is making process flows customised to the customer’s requirements available directly, buyers are assured of high component quality and can obtain parts much more quickly and economically.”

The SMBJ-HR and SMBJ-HRA series high-reliability TVS diodes are available now in minimum order quantities of 3,000 pieces in tape and reel packaging on 13" reels.