68964d7ea046a2107f696378 250626 Prodmod Microchip Rad Hard Space Power Supp

Off-the-Shelf Rad-Hard DC-DC Converter Fit for Space

Aug. 8, 2025

The 15-W SA15-28 DC-DC power converter and companion SF100-28 EMI filter from Microchip meet MIL-STD-461 specs.

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Microchip Technology recently introduced the SA15-28 off-the-shelf, radiation-hardened, 15-W DC-DC power converter with a companion SF100-28 EMI filter, both of which are designed to meet MIL-STD-461 specifications. The space-grade non-hybrid DC-DC isolated power converter can be paired with the electromagnetic-interference (EMI) filter that operates from a 28-V satellite bus in harsh environments.

Weighing only 60 grams and occupying only 1.68 cubic inches, the SA15-28 is available with 5-V triple outputs that are optimal for use with point-of-load converters and low-dropout linear regulators to power FPGAs and microprocessors. The SF100-28 EMI noise-suppression filter can be used with numerous power converters that have a total output power of up to 100 W.

Like all of Microchip’s space-rated devices, the SA15-28 is available in several variants ranging from commercial-off-the-shelf (COTS) to space-qualified level, or from radiation-hardened by design (RHBD) to sub-QML packaging options in ceramic or plastic. It’s supported by comprehensive analysis and test reports including worst-case analysis, electrical stress analysis and reliability analysis.

The SA15-28 converter and SF100-28 EMI filter are now available for purchase. To learn more about Microchip’s scalable space solutions, click here.

About the Author

Lee Goldberg | Contributing Editor

Lee Goldberg is a self-identified “Recovering Engineer,” Maker/Hacker, Green-Tech Maven, Aviator, Gadfly, and Geek Dad. He spent the first 18 years of his career helping design microprocessors, embedded systems, renewable energy applications, and the occasional interplanetary spacecraft. After trading his ‘scope and soldering iron for a keyboard and a second career as a tech journalist, he’s spent the next two decades at several print and online engineering publications.

Lee’s current focus is power electronics, especially the technologies involved with energy efficiency, energy management, and renewable energy. This dovetails with his coverage of sustainable technologies and various environmental and social issues within the engineering community that he began in 1996. Lee also covers 3D printers, open-source hardware, and other Maker/Hacker technologies.

Lee holds a BSEE in Electrical Engineering from Thomas Edison College, and participated in a colloquium on technology, society, and the environment at Goddard College’s Institute for Social Ecology. His book, “Green Electronics/Green Bottom Line - A Commonsense Guide To Environmentally Responsible Engineering and Management,” was published by Newnes Press.

Lee, his wife Catherine, and his daughter Anwyn currently reside in the outskirts of Princeton N.J., where they masquerade as a typical suburban family.

Lee also writes the regular PowerBites series.