Vietnam gains from Samsung Electro-Mechanics’s US$4.9B AI substrate expansion plan

Samsung Electro-Mechanics, a subsidiary of Samsung Group, is making a significant investment of US$4.9 billion to expand its chip-packaging substrate production in South Korea and Vietnam. The company has allocated approximately US$3.1 billion for new production lines in its Sejong plant in South Korea, where it will manufacture flip-chip ball grid array (FC-BGA) substrates.

These substrates are crucial for AI accelerators, server processors, and other advanced computing chips. The South Korean expansion is expected to be completed by May 2028, with mass production starting in September 2028.

Meanwhile, Samsung Electro-Mechanics' Vietnamese subsidiary plans to expand its package-substrate plant in Vietnam by the end of April 2028. This investment represents about 44% of the company's consolidated equity as of the end of 2025, highlighting the importance of advanced package substrates in its long-term strategy.

The shift towards AI has brought packaging into the spotlight, as larger and more computationally demanding AI models require processors that can move data quickly and efficiently. FC-BGA substrates play a key role in this, offering dense electrical connections, better signal performance, and improved heat management. The demand for these substrates is being driven by AI accelerators in data centers, high-end server CPUs, and GPUs.

Samsung Electro-Mechanics aims to position itself as a key player in the AI-related packaging market, with the South Korean expansion representing the larger portion of the investment. The Vietnamese expansion strengthens the company's position in Southeast Asia, which is becoming a more important electronics production hub. Governments in the region are seeking to attract more semiconductor and advanced manufacturing investment, and Samsung Electro-Mechanics' move in Vietnam adds to its growing footprint in the country.

While substrates are just one part of a complex semiconductor supply chain, this investment bolsters Vietnam's claim as a serious electronics manufacturing base, especially as AI hardware demand reshapes global supply chains.