Samsung Electro-Mechanics commits $5 billion to expand FC-BGA substrate production for AI servers

Samsung Electro-Mechanics announces historic $5 billion expansion

Samsung Electro-Mechanics revealed plans for a $5 billion investment to expand flip chip ball grid array substrate manufacturing across facilities in South Korea and Vietnam, representing the company's largest-ever capital expenditure for a single product1

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. The investment responds to surging demand for FC-BGA substrates driven by the expanding AI infrastructure market and high-performance computing sector. CEO Chang Duck-hyun emphasized that high-value semiconductor substrates have become critical components determining both semiconductor performance and supply chain stability in rapidly growing AI markets1

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Investment breakdown targets Sejong plant and Vietnam operations

The total investment of 6.78 trillion won ($4.99 billion) will be allocated strategically across two key manufacturing locations2

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. Samsung Electro-Mechanics will direct 4.27 trillion won ($3.14 billion) toward expanding production capacity at its Sejong plant in central South Korea, with the investment running from September 2026 through May 20281

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. An additional 2.51 trillion won will flow through the company's Vietnam unit to expand production facilities there2

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. Mass production on the new lines at the Sejong plant is scheduled to begin in September 2028, positioning the company to meet anticipated market demand1

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FC-BGA substrates connect AI accelerators to mainboards

FC-BGA substrates serve as highly integrated semiconductor components that connect high-performance chips—including AI accelerators, GPUs, and central processing units—to mainboards while transmitting electrical signals and supplying power1

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. These substrates have become essential as AI servers and data centers require increasingly sophisticated interconnect solutions. The investment in South Korea and Vietnam will specifically target production capacity for these advanced substrates, which are experiencing unprecedented demand from Big Tech customers building out AI infrastructure1

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Long-term partnerships with Big Tech customers secure demand base

Samsung Electro-Mechanics structured this expansion based on medium- to long-term partnerships with global Big Tech customers, which include financial support and guarantees for long-term demand1

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. These agreements provide the company with a stable demand base and strengthen its competitive position in the FC-BGA business across high-growth markets including AI servers, high-performance computing, and automotive applications1

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. The company expects these partnerships to mitigate investment risk while ensuring sustained revenue streams as production scales up through 2028.

Expansion aligns with broader regional investment commitments

This capital expenditure forms part of Samsung Electro-Mechanics' July commitment to invest 8 trillion won in the Chungcheong region, which includes Sejong, and 15 trillion won in the Busan area by 20401

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. The phased approach demonstrates the company's confidence in sustained growth across semiconductor substrate markets over the next decade. Industry observers should monitor how competitors respond to this capacity expansion and whether additional Big Tech partnerships emerge as production facilities come online in 2028.