• TSMC launches 3‑nanometer N3 process family, entering mass production in December 2022 at Fab 18. • Two main flavors: Base N3B and Enhanced N3E, treated as separate lineages with distinct design rules. • N3B has a 45‑nm contacted gate pitch, the tightest reported for any 3‑nm node to date. • TSMC plans higher‑performance variants of N3E for future releases, expanding the N3E lineup. • IEDM papers confirm N3B and N3E details; later symposium revealed additional derivative nodes. • Despite minimal disclosure, N3B’s data surpasses earlier N5 releases, signaling stronger process maturity.
Article Summaries:
- TSMC has moved its 3‑nanometer “N3” process family into mass production, with a volume‑production ceremony held on December 29, 2022. The company now offers two distinct 3 nm lineages: the base N3B and the enhanced N3E, each with different design rules and performance targets. At the 2023 Technology Symposium and IEDM, TSMC disclosed key technical details, including a 45‑nm contacted gate pitch-the tightest reported to date-and the introduction of a self‑aligned contact (SAC) scheme to mitigate yield‑draining misalignment issues. Future N3E variants are expected to deliver higher performance, while additional derivative nodes were also announced.
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