Market Share
~30% IC substrates
Key Product
FC-BGA substrates for AI accelerators
Bottleneck Status
Capacity constrained through 2026
Full briefing▼ Expand
Ibiden is the world's leading supplier of FC-BGA (flip chip ball grid array) substrates — the high-density circuit boards that connect advanced chips to server motherboards. For AI accelerators like NVIDIA's H100 and H200, IC substrates are a critical chokepoint: without Ibiden's advanced substrates, GPU servers cannot be assembled. The company holds approximately 30% of the global IC substrate market and has been running at full capacity with an 18-24 month backlog. NVIDIA is believed to hold priority allocation agreements with Ibiden. The substrate shortage has been one of the binding constraints on AI GPU supply in 2023–2025, making Ibiden one of the less-visible but most consequential bottlenecks in the AI supply chain.
Connected companies
Tap a chip to trace that company's chain.
Critical path — raw silicon to deployment
The tightest single-source dependencies, in order.
RAW MATERIALS
Antimony (CN)
Antimony trioxide (Sb₂O₃) for flame retardants and antimony metal for III-V compounds
MATERIALS
Ibiden
FC-BGA substrates for AI accelerators
FOUNDRIES
TSMC
CoWoS advanced packaging, N3/N2 logic
CHIP DESIGNERS
Broadcom
TPU ASICs (Google), networking ASICs
QWho supplies Ibiden?
Ibiden relies on 1 upstream supplier across the AI chip supply chain.
Antimony (CN) (Dominant antimony producer for PCB substrate flame retardants and III-V semiconductor compounds).
QWhat does Ibiden make?
Dominant supplier of IC substrates for advanced packages
Key products FC-BGA substrates for AI accelerators
▲Capacity constrained through 2026