SEF Power

SEF Power is a French power conversion manufacturer and electronics manufacturing services provider based in Fontenay-Trésigny near Paris. The company specializes in custom power electronics development and electronic assembly for demanding industries including aerospace, defense, railway, medical, and nuclear sectors. Its core product lineup features AC-DC power supplies, DC-DC converters, high voltage power supplies up to 25kV, DC-AC inverters, and brushless motor control systems. Operating certified under EN9100 and ISO9001 quality standards, the organization delivers complete turn-key solutions from R&D design to high-volume manufacturing. As an electronics contract manufacturer, SEF Power offers component sourcing, PCB assembly, full system integration, embedded software development, and functional testing. The firm also provides maintenance services, product lifecycle support, and obsolescence management for high-reliability applications. Serving global OEMs and system integrators, SEF Power combines specialized engineering expertise with state-of-the-art production capabilities.