Advanced Chip and Circuit Materials, known as ACCM, is expanding manufacturing at its La Crosse facility for the Celeritas family of dielectric materials used in AI hardware.
The company says none of those materials depends on T-glass or quartz fabric, both of which are in short supply. Its supply chain is separate from the conventional copper-clad laminate chain, with typical lead times of about three weeks.
Prepreg and build-up capacity is set to reach 87 million square feet a year this month. New laminate capacity of 20 million square feet a year is scheduled to come online in January 2027, with larger expansions planned for the second half of 2027.
The materials cover four areas, including ultra-low-loss products for 224G-class switch and backplane designs, laminates for large accelerator boards, core materials for IC substrates and packages, and build-up materials. ACCM says they are halogen-free and PFAS-free and work on equipment PCB makers already use.
ACCM is also opening a second materials lab at the Wisconsin site. The company has not disclosed how much it is investing in the expansion.
