South Korea aims 50% defense chips

South Korea has put defense semiconductors into its national-security planning with a goal of sourcing half of them domestically by 2029. The plan, announced on May 22, targets a supply chain that Seoul says is still overwhelmingly dependent on foreign vendors, especially in the United States and Taiwan. (digitimes.com) The move comes as Samsung Electronics Chairman Lee Jae-yong has been in Taiwan discussing foundry cooperation with MediaTek, and as Taiwanese prosecutors pursue a separate probe into alleged smuggling of Nvidia-linked AI servers to China. (thelec.net) Together, the developments show governments and chip companies in East Asia dealing with semiconductors as both industrial inputs and controlled strategic goods. ### How exposed is South Korea’s defense chip supply today? South Korea currently relies on overseas suppliers for 98.9% of its defense semiconductors, according to industry reporting on the government plan. U.S. suppliers account for the largest share of that exposure, and dependence on American vendors reached 85% among 6,985 chip types used across 54 major weapon systems in 2023, The Elec reported from an ASSIC 2026 briefing. The 50% target is not a broad promise to replace every imported component. The plan is aimed at selectively localizing chips that are commercially feasible to produce at home or vulnerable to export controls, according to the same report and DigiTimes’ account of the policy. (digitimes.com) ### What exactly did Seoul announce for 2029? The May 22 plan sets a 2029 deadline for raising domestic production of defense semiconductors to 50%. DigiTimes said the policy was framed as a way to reduce reliance on U.S. and Taiwanese supply chains and strengthen national security. (thelec.net) ASSIC 2026 reporting indicates the effort is tied to defense procurement and industrial policy rather than a single factory announcement. That matters because defense chips often involve older-node, custom, radiation-hardened or otherwise specialized components that do not map neatly onto the commercial logic of leading-edge smartphone and AI chips. That characterization is an inference from the structure of defense procurement and the government’s selective localization language, not a direct quote from Seoul. (digitimes.com) ### Why was Lee Jae-yong in Taiwan this week? Lee Jae-yong traveled to Taiwan and met MediaTek executives to discuss foundry cooperation, according to multiple reports. (digitimes.com) Chosun said the talks involved potential semiconductor contract-manufacturing cooperation, while other reports said Samsung was trying to win MediaTek business away from Taiwan Semiconductor Manufacturing Co., the dominant global foundry. MediaTek matters because it is Taiwan’s top fabless chip designer and a major customer relationship for any foundry trying to gain share against TSMC. Chosun said the visit came just after Samsung settled labor negotiations that had raised concern about possible production disruption, and described the trip as an effort to reassure customers and secure new orders. (digitimes.com) ### What do Taiwan’s raids have to do with export controls? Taiwanese prosecutors said they searched 12 locations and sought to detain three people in an investigation into forged documents used to export AI servers to China, Hong Kong and Macau. Taipei Times reported the case as Taiwan’s first crackdown on semiconductor smuggling, and said the servers were manufactured by Super Micro Computer and contained Nvidia AI chips. (chosun.com) The case centers on alleged false declarations rather than chip fabrication itself. But it shows Taiwan’s role not only as a manufacturing hub, but also as an enforcement point in the movement of restricted AI hardware through third-party systems and paperwork. (chosun.com) That framing is supported by the prosecutors’ focus on forged export documents and by reports describing the case as a formal anti-smuggling action. ### Why are these three developments being read together? May 2026 has produced three separate actions across East Asia: a South Korean localization target, Samsung’s effort to deepen customer ties in Taiwan, and Taiwan’s enforcement action over AI-server exports. Each involves a different actor — a government, a company chairman and prosecutors — but all center on control over semiconductor supply, production or distribution. (taipeitimes.com) The next concrete milestone is South Korea’s 2029 localization target. In the nearer term, Samsung’s pursuit of foundry customers and Taiwan’s prosecution of the 12-site export case will provide the next public tests of how East Asian governments and companies are handling semiconductors tied to defense and AI controls. (taipeitimes.com) (digitimes.com)