India, July 3 -- As TSMC ramps up 2nm and 3nm production, it is also accelerating the phaseout of legacy nodes. Commercial Times, citing supply chain sources, reports that monthly wafer starts at Fab 15A, TSMC's primary 28nm site, have dropped by more than 25% since the start of the year.

The pullback in 28nm production also aligns with a broader transformation of Fab 15A. A May Economic Daily News report indicated that the facility, long focused on 28nm and 22nm production, is being converted into a 4nm manufacturing base, with older equipment phased out and new tools brought online. The report added that neighboring Fab 15B remains a key hub for 7nm production.

In general, sources cited by Commercial Times estimate TSMC's monthly 28nm...