Post by QTS Global

Geopolitics and semiconductors continue to collide—this time around gallium nitride (GaN) and national security. The Committee on Foreign Investment in the United States (CFIUS) has once again drawn a hard line on sensitive chip technologies. The proposed acquisition of Lumileds by Sanan Optoelectronics raised serious concerns due to the strategic importance of GaN in advanced defense systems—reportedly including U.S. Air Force missile tracking and programs like the Space Fence. This isn’t new territory. Multiple attempts by Chinese firms to acquire GaN-related assets have been blocked over the years, reflecting a consistent stance: semiconductor materials with dual-use (commercial + military) applications are now firmly within the national security perimeter. What’s striking is the asymmetry of consequences. While deals are halted abroad, the fallout in Mainland China can be severe—plunging valuations, frozen shares, and even detention of executives. Yet, companies like Sanan continue to push outward, signaling that global expansion in strategic tech sectors remains a priority despite the risks. At the same time, the technology race is accelerating. The Defense Advanced Research Projects Agency (DARPA) has awarded Raytheon Technologies a multi-year contract to develop next-generation transistors—an effort widely seen as a response to China’s gallium export controls and a broader push to engineer around supply chain vulnerabilities. Key takeaway: We are moving beyond supply chain competition into material-level geopolitics. Control over inputs like gallium—and the ability to innovate beyond constraints—will define the next phase of the semiconductor landscape.