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UMC Fab 12A (N28/N40)


[Last updated: Apr 2026]

This semiconductor fab is located in Tainan, Taiwan.

Fab: UMC Fab 12A (N28/N40) Gigafactory
Company: UMC
Owner: UMC
City: Tainan
State: Tainan
Country: Taiwan
Geopolitical: Taiwan Strait Risk (HIGH risk)
Node/Line: 28-40nm
Category: Mature
Wafer size: 300.00 nm
Product: 5G RF, automotive, consumer SoCs
Fab type: Logic
Status: Operational
Capacity: 80 kWSPM
Customers: Qualcomm, MTK, NXP, Marvell

Notes: Second-largest Taiwanese foundry; no leading-edge ambition; stable mature node


source: UMC annual report