Fixing the GaN Problem

Another supply chain emergency on the horizon

This post originally appeared in ChinaTalk.

“With respect to GaN power semiconductors, the U.S. has already lost its lead and is at risk of being pushed out altogether.”

In the semiconductor industry, the Trump administration is striving to bring back critical technologies that slipped out of our hands decades ago. The U.S. has attracted billions of dollars in investment to stimulate cutting-edge logic manufacturing, the development of EUV lithography, and HBM production. However, the semiconductor ecosystem is a lot more than just AI chips. And if the administration wants secure supply chains, it should focus on another rising material: gallium.

Just as Pluto is technically not a planet, gallium is technically not a rare-earth element despite often being discussed in the same context. Like many rare earths, gallium is not directly mined from the Earth’s crust but rather a byproduct of aluminum extraction. Although not classified as a rare earth, the mineral plays a major role in compound semiconductors and has critical importance for the future of AI, defense, robotics, and more.