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Gen-6 SJ MOSFETs Aimed at AI, Industrial Apps, and Smart-Home Appliances

April 17, 2025

A new family of 25 superjunction MOSFETs from Magnachip offers improved specific on-resistance, faster switching speeds, and enhanced ESD protection.

Lee Goldberg

Related To:

Electronic Design

Magnachip Semiconductor introduced 25 new 6th-generation SJ MOSFETs, on display at APEC 2025, that offer a 40% reduction in specific on-resistance (R_SP) and 23% reduction in switching speeds over its 5th-gen products. All devices include a Zener diode embedded between the gate and source to enhance reliability and protect the SJ MOSFETs from ESD-induced damage. Fabricating the devices using the company’s Gen-6 process also shrinks their silicon footprint by approximately 30%.

Due to these enhancements, Magnachip’s new SJ MOSFETs are well-suited for applications requiring high power efficiency, including AI TVs, smart refrigerators, AI laptop adapters, and power supplies.

The new product lineup, which consists of 600-, 650-, and 700-V voltage ratings, is available in seven package types, including TO220, TO220FT, SOT223, PDFN88, and D2PAK, with high-demand options such as DPAK and TO220F.

Product information links:

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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.