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Ibiden

IC package substrates for AI-server GPUs and CPUs

Published by FyncaResearch checked How we research

Where it fits in an AI server rack

Its Electronics segment makes IC package substrates. For Q1 FY2026 (quarter to June 30, 2026) Ibiden reported strong demand for GPUs and high-end CPUs, stable production at its Cell8 line, higher demand than planned for GPUs, switching ICs for AI servers and high-end CPUs, and industry demand exceeding supply (Aug 5, 2026). It is developing EMIB-T substrates, with its Gama plant due to start from the end of FY2027.

What the evidence establishes

AI-rack evidence

Disclosed: Ibiden’s Q1 FY2026 presentation and Q&A cite strong GPU demand and substrates for AI servers and switching ICs; customers are not named.

An explicit AI-server or AI-rack product, design-in, supply role, program, reference design or partnership, such as a part named for rack-scale AI systems or a product sold for AI data centers. For a rack builder, it means the company’s own AI servers or racks. This does not establish revenue, market share, volumes or future sourcing.

Component roleIC package substrates for AI-server GPUs and CPUs
EvidenceDisclosed: Ibiden’s Q1 FY2026 presentation and Q&A cite strong GPU demand and substrates for AI servers and switching ICs; customers are not named.
How we knowDisclosed The company’s own filing, release, annual report, product page or investor record describes the AI-server or AI-rack role. Where customers are unnamed, the listing says so.
Primary sourceIbiden — supporting disclosure
Company or official disclosure; vendor claims are attributed to their source.
Checked. This is the research review date, not the source publication or quote time.

Keep in perspective

Ibiden does not name its GPU customers; its NVIDIA supply role is reported, not disclosed. The group also has a Ceramics segment serving automotive.

Diversified business exposure. This describes the breadth or role of the business; it is not an investment rating. An AI-server product, design-in or partnership does not by itself establish material AI-rack revenue, market share, or future returns.

Connections to the assembly

These links explain the technology relationship. The model is illustrative and does not represent an actual manufacturer’s bill of materials.

ABF package substrate

A large multilayer organic substrate made with build-up film. It fans the interposer’s dense connections out to the pitch of the board and carries power to the dies.

Scope of the company links: ABF (FCBGA) package substrates. Ibiden (strong GPU demand, substrates for AI servers and switching ICs) and Samsung Electro-Mechanics (FCBGAs for AI accelerators and server CPUs) disclose AI-accelerator substrate supply without naming customers. Unimicron markets FCBGA for AI servers and switches, and Nan Ya PCB is developing large, high-layer substrates for AI and HPC (positioning). Kinsus is named by ASE as an IC substrate supplier, with no AI program documented. Ajinomoto supplies the ABF insulating film to substrate makers and is an upstream enabler, not a substrate maker. Which substrate maker supplies a given GPU is reported, not disclosed.

Related research

Companies with overlapping sector exposure. Their products and evidence may differ; this is not a list of equivalent investments.

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