Nvidia Locks In Packaging Capacity: Amkor Interposer 4x, Substrates 2.5x, $1.1B KYEC Prepay
Nvidia has signed a set of capacity expansion agreements across its advanced packaging and test supply chain, targeting a more than fourfold increase in Amkor interposer wafer capacity by end-2028 (combined Arizona and South Korea commitments now $3B), a 2.5x increase in package substrate capacity over three years, a 15x expansion of SPIL optical-engine capacity by mid-2027, and $1.1B of capacity reservation financing to KYEC for U.S. test facilities. The deals also cover Samsung Electro-Mechanics ABF substrate output in Korea and IBIDEN substrate capacity in Japan, signaling that interposer, substrate and test — not GPU die — are the binding constraints on AI accelerator output.
Prepaid capacity reservations of this scale shift packaging risk onto Nvidia's balance sheet and effectively pre-empt CoWoS-class interposer and substrate supply for competitors through 2028. Near-term BOM relief is unlikely — the capacity lands in 2027-2028 — but it lowers the probability of a packaging-driven allocation squeeze on Rubin-generation parts.
Sources
- Semiconductor Engineering — Chip Industry Week In Review
- TSPA Semiconductor (SemiVision Research) — NVIDIA's Next Supply Chain Supercycle: 2.5x Substrate Capacity, 15x Optical Engines, and the Race to Build AI Factories
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