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SK Hynix to establish first 2.5D packaging production line at Indiana facility
Monday, December 29, 2025 at 04:37 AM
SK Hynix is reportedly planning to establish its first mass production line for 2.5D packaging at its upcoming facility in West Lafayette, Indiana. This move aims to expand the company's capabilities beyond HBM production to include the integration of HBM with system semiconductors, potentially offering a turnkey solution to rival TSMC's CoWoS dominance. The plant, representing a $3.87 billion investment, is targeted for operation in the second half of 2028.
Context
SK hynix is officially expanding into the 2.5D packaging market to alleviate the global supply bottleneck for AI accelerators, traditionally dominated by TSMC’s CoWoS technology. By offering packaging as a standalone service, the company is transitioning from a high-bandwidth memory (HBM) supplier to a vertically integrated AI semiconductor partner. This shift allows SK hynix to package its own market-leading HBM dies directly with logic processors, providing a critical alternative for customers like Nvidia who face persistent back-end capacity constraints.
To support this strategy, SK hynix is investing $3.87 billion to build an advanced packaging facility in West Lafayette, Indiana. The project, which recently received $458 million in direct CHIPS Act funding and $500 million in federal loans, is scheduled to begin mass production in the second half of 2028. This facility will be the first of its kind in the U.S., specializing in the assembly of next-generation HBM4 and HBM4E chips, effectively localizing a vital link in the AI hardware supply chain.
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