Blitz India Business
NEW DELHI: Construction progress on a semiconductor fabrication plant is the most misleading percentage in industrial reporting, because the second half of the schedule contains almost all of the risk. The Tata–PSMC fab at Dholera in Gujarat — India’s first full-scale chip fab, a ₹91,000 crore line designed for 50,000 wafers a month at the 28-nanometre node — has crossed the halfway mark, with foundations complete and cleanroom installation and equipment calibration now under way ahead of trial production targeted for December 2026.
Understand what those two phases involve, because the schedule risk lives there. A fab cleanroom is not a clean building; it is a machine in its own right, with air changed hundreds of times an hour, vibration isolation measured in microns, and particulate counts that must be verified before a single tool is energised. Equipment calibration follows, and it is slower still: advanced lithography tools — Dholera has secured its lithography from the Dutch supplier ASML — are installed, aligned and then qualified against test wafers, an iterative process that ends only when yield on a known pattern is reproducible. Foundations and steel are schedulable work. Calibration is discovery work, and it is the reason fabs everywhere in the world announce first silicon in ranges rather than on dates.
Trial production, not volume production: the December 2026 target is for first wafers through the line — the yield ramp that follows is a separate and longer exercise.
Any country can pour a foundation. The question a fab answers is whether a country can hold a tolerance — for years, on every shift.
At a Glance
• Project: Tata–PSMC fab, Dholera, Gujarat — India’s first full-scale chip fab
• Investment: about ₹91,000 crore
• Design capacity: 50,000 wafers a month, starting at the 28-nanometre node
• Status: past the halfway mark; cleanroom installation and equipment calibration under way
• Lithography: tools secured from ASML
• Trial production target: December 2026
• Already operating: assembly and test plants — Micron and CG Semi at Sanand, Tata Electronics at Jagiroad, Assam
• Programme scale: projects worth more than $21 billion approved under the India Semiconductor Mission
The node choice is the commercially literate part of the plan and is routinely misread as unambitious. Twenty-eight nanometres is not the leading edge and is not meant to be. It is the workhorse geometry for automotive controllers, power management, industrial sensors, display drivers and the microcontrollers inside appliances — a market that is large, growing, price-competitive and, critically, one where design cycles are long and customer relationships are sticky. India’s own demand in exactly those categories is expanding fast: the automotive sector alone dispatched a record 4.7 lakh passenger vehicles in July, each carrying dozens of such chips. A first fab positioned against domestic demand it can actually see is a considerably better bet than one positioned against a leading-edge market already served by three incumbents with thirty years of yield learning.
Meanwhile the back end is already live, and it is where the near-term employment and revenue sit. Assembly, test and packaging plants — Micron and CG Semi at Sanand, Tata Electronics at Jagiroad in Assam — are operating, with Micron’s Sanand facility expected to handle tens of millions of units this year and to scale into the hundreds of millions as lines ramp. Together, projects worth more than $21 billion have been approved under the India Semiconductor Mission. The constructive priority now is the layer between: a domestic base of gases, chemicals, photoresists, masks and precision components, which is the part of a semiconductor ecosystem that determines whether a fab operates at world-class cost once it is running. That supply chain takes as long to build as the fab itself and attracts a fraction of the attention. December’s trial production will be the headline; what is procured domestically by December 2028 will be the actual measure of the programme.