Abstract:Since 2004, the National Security Agency (NSA) and the Department of Defense (DoD) of the United States have jointly funded the "Trusted Foundry" (TF) program to ensure the credibility and security of domestic microelectronics manufacturing capabilities in America. The project aims to establish a trusted certification supplier system that covers the entire chain of research and development and production for microelectronic devices and some optoelectronic devices. As the only certified advanced manufacturing capability was acquired by foreign capital in recent years, the DoD has strengthened its trusted strategic deployment, focusing the TF project on breaking through in advanced manufacturing capabilities. In the context where the trend of maximizing the use of commercial manufacturing facilities and intellectual property in one country's manufacturing capacity building, and relying on commercial capabilities, is unstoppable, it is crucial to delve into the 20-year development, management and service models, evolution of manufacturing capabilities, and the allocation and utilization of funds of the TF project. This analysis will draw lessons to provide references for China to enhance innovation, optimize industry, and improve the international competitiveness of its microelectronics industry. The study found that the TF project, primarily serving U.S. intelligence agencies and the DoD, and managed by the Trusted Access Program Office, underwent five phases: requirement articulation, project initiation, stable operation, responding to contingencies, and returning to basics. It has played a significant role in meeting military needs through commercial channels, enhanced the technological level of U.S. microelectronics manufacturing, and ensured the security and reliability of the U.S. supply chain, becoming an integral part of the U.S. trusted microelectronics strategy. Accordingly, this provides insights for China in developing autonomous control over advanced manufacturing capabilities and enhancing the process and operational abilities of existing production lines.