The semiconductor supply chain is a sequence of specialized handoffs that turns materials, tools, designs, wafers, packages, and logistics into finished chips.
Foundry capacity is the narrowest visible gate. A design can be excellent and still miss the market if wafers, EUV slots, substrates, HBM, packaging, or test capacity are unavailable. AI accelerators made this especially obvious because the bottleneck often sits in a combination of leading wafers and advanced packaging rather than in architecture alone.
| Supply-chain layer | Bottleneck to watch | Why it constrains chips |
|---|---|---|
| Equipment | EUV, deposition, etch, metrology tools | Limits how quickly fabs can expand |
| Wafer fabrication | Qualified capacity at the target node | Sets the number of die that can exist |
| Advanced packaging | Interposers, HBM integration, substrates | Often gates AI accelerator volume |
| Test and logistics | Probe, burn-in, final test, shipping | Determines usable finished units |
Resilience comes from planning before allocation becomes urgent. Multi-sourcing, mature-node alternatives, package flexibility, long-lead forecasts, and clear customer priorities matter as much as the chip design itself.
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