Sherman-DenisonGrayson County
Sherman static control floors, built to ANSI/ESD S20.20
Wafer, probe and device work in Sherman puts two unrelated specifications on the same slab: a particle class and a resistance band. Neither standard references the other, which is what makes these rooms harder than they look. The record for Sherman shows semiconductor fab, semiconductor fab (wafer supply).
The measured record for Sherman
Fabrication and equipment work in Grayson County is what puts a resistance requirement on floors here, and each operation below carries the source it was checked against.
Texas Instruments' SM1 fab in Sherman began production in December 2025 and is ramping
Texas Instruments' SM1 fab in Sherman began production in December 2025 and is ramping toward tens of millions of analog and embedded chips per day; SM2's shell is complete with cleanroom install starting later in 2026, and SM3/SM4 are planned toward a 100-million-chip-per-day goal.
GlobalWafers America opened its first 12-inch silicon wafer fab in Sherman
GlobalWafers America opened its first 12-inch silicon wafer fab in Sherman in 2025 and is planning a second phase with an additional $4 billion investment on its 142-acre Sherman campus, including converting part of the site to silicon-carbide epitaxy wafer production.
Two specs on one slab
In Sherman the floor is specified twice, by two standards that were written independently, and reconciling them is most of the specification work.
The document behind a Sherman job
ISO 14644-1:2015 is the one worth reading first for work like this. Classifies cleanrooms by airborne particle concentration, ISO Class 1 through 9. Referenced when an ESD floor also has to hold a particulate rating.
Two requirements on one floor
A cleanroom ESD floor has to satisfy two unrelated specifications at once: a resistance band and a particulate class. They are not in conflict, but they do constrain the system, the seams and the way the floor is cleaned.
Questions from Sherman
Our floor passed at install and fails now. What changed?
In a classified room the answer is usually something applied to the surface. Anything left on top of the system sits between the floor and its ground path. Check what the cleaning regime changed before assuming the floor wore out.
How soon can you get to Sherman?
Tell us the timing you are working against and we will give you a real date rather than a placeholder. Crews work Grayson County alongside the rest of the Texas schedule. Send the details.
Do you handle the whole job in Sherman or just the coating?
The whole job: removing what is down, preparing the slab, the grounding network, the system itself and the cure schedule around your operation. Prep and grounding are where most of the work is. How it runs.
Sources
- ANSI/ESD S20.20-2021, the ESD control program standard for electronics handling
ESD control program requirements (administrative and technical) for any organization that handles ESD-sensitive electrical or electronic parts.
www.esda.org - ISO 14644-1:2015, cleanroom classification by airborne particle concentration
Cleanroom classification by airborne particle concentration (ISO Class 1 through 9); referenced when an ESD floor also has to hold a cleanroom particulate rating.
www.iso.org
Every number on this page came from one of those documents. Send us the room and we will tell you which of them your floor has to answer to.