Hidden beneath AI chips, Chinese circuit boards raise security concerns in U.S.

The demand for printed circuit boards (PCBs), an essential component in nearly every electronic device, has surged in the rapidly expanding artificial intelligence sector. However, this boom presents a significant challenge for the United States, as a majority of these crucial components are sourced from China. This dependency raises serious national security concerns, prompting the U.S. Defense Department to mandate that most of its purchases come from the dwindling number of domestic manufacturers. Mike Cadenazzi, the U.S. Assistant Secretary of War for Industrial Base Policy, highlighted the potential risks associated with compromised PCBs, stating that they could serve as avenues for malicious actors to introduce harmful components. He warned that such vulnerabilities could lead to dire consequences, like a missile malfunctioning in flight. Alarmingly, the share of global PCB production from the U.S. has plummeted from 30% to a mere 4%, as reported by the Printed Circuit Board Association of America (PCBAA). The executive director of PCBAA, David Schild, emphasized the precarious nature of this reliance, noting that six out of ten PCBs are now produced in China. This situation has prompted discussions in Congress about subsidies to stimulate domestic PCB manufacturing, coinciding with escalating tensions between the U.S. and China over AI supremacy. Former Deputy Under Secretary of Defense Al Shaffer pointed out that PCBs are particularly vulnerable in the electronics supply chain due to their layered structures, which can easily conceal malicious modifications. Amid calls for increased domestic production, lawmakers are introducing legislation aimed at providing financial incentives for American-made circuit boards. The urgency of revitalizing PCB production in the U.S. is compounded by increasing demand from both the AI sector and military needs. TTM Technologies and Sanmina are the only two publicly traded companies manufacturing PCBs domestically, and both have seen their stock prices soar in response to this burgeoning demand. With military conflicts in the Middle East and Ukraine disrupting the supply of essential raw materials, PCB prices have surged, impacting costs across the industry. TTM announced price hikes ranging from 5% to 25%, as it grapples with the dual pressures of military and commercial demand. To address the capacity shortfall, TTM is expanding its operations with new factories in New York and Wisconsin. Once fully operational, the company will operate seven factories in Asia and a total of 18 in the U.S., bolstering its ability to meet domestic and defense needs. As the global PCB market is projected to grow, TTM's focus on domestic production is critical. The company is committed to sustainability, aiming to use 60% renewable energy and recycle a significant portion of its water consumption. New legislation mandates that defense electronics be sourced from U.S. manufacturers starting next year, while the Protecting Circuit Boards and Substrates Act proposes tax credits for companies using American-made PCBs. This legislative push reflects a broader strategy to level the playing field against heavily subsidized Chinese manufacturers. Despite the challenges, innovative startups are emerging to enhance PCB technology, with companies like Quilter leveraging AI for design improvements and Itera developing adaptable circuit boards. The overarching goal remains clear: to establish a resilient domestic PCB industry that can compete effectively against foreign counterparts and secure critical technology supply chains.