High-Voltage Power Diodes Offer Higher Current Capacities, Faster Recovery Times

Dean Technology’s latest series of high-voltage diodes brings higher currents and faster recovery times to X-ray equipment and other demanding applications.
March 30, 2026

Building up its portfolio of medium-power high-voltage diodes, Dean Technology added the FH Series and SH Series that evolved from the technology of the legacy 2CL series diode line. The new series offer higher current and significantly faster reverse-recovery time, suiting them for applications with critical performance requirements such as X-ray equipment (medical, dental, industrial, and security), induction heating, and high-voltage power supplies. 

Dean’s SH series models are standard recovery, but the FH series offers a reverse-recovery time (TRR) of 40 ns maximum, significantly faster than its 2CL predecessor (100 ns). SH series devices offer a maximum repetitive reverse voltage range (VRRM) from 8 to 15 kV at 200 to 350 mA of average forward current (IF(AVM)). The FH series includes more devices and a wider range of specifications, offering a VRRM range of 2 to 30 kV at an IF(AVM) range of 100 to 700 mA.

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