TSMC CoWoS-L roadmap: 3.5× in production since 2024; 5.5× (100 × 100 mm substrate) in volume production in 2026 at a reported yield above 98%; 9.5× targeted for 2027 with 12+ HBM stacks (2025 symposium); 14× with 20 HBM stacks targeted for 2028 (2026 symposium)
5.5× (volume, 2026) → 9.5× (2027) → 14× (2028)forecast
| Value kind | forecast — Forecasts are time-bound outlooks, not specifications; test decisions across plausible scenarios. |
|---|---|
| Scope | Reticle multiple is the interposer size, not the 100 × 100 mm substrate footprint. 9.5× and 14× are TSMC targets; 5.5× yield is as reported from TSMC's release. |
| As of | 2026-05 |
| Source | TSMC 2026 North America Technology Symposium, via TrendForce (14 May 2026) and SemiEngineering; 9.5× figure from TSMC's 2025 symposium |
| Review | checking…review by 2027-04-30 · standard cadence |
| Recorded changes | last 2026-10-15 · 4 revisions tracked |
| Claim id | cowos-l-reticle-multiple-5-5-and-times-100-and |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.