The story
Ereztech has been a reliable supplier of semiconductor-grade cobalt precursors for more than ten years. Long before domestic sourcing became a strategic imperative, we were quietly building the chemistry expertise, quality systems, and customer relationships that the industry depends on. As the semiconductor supply chain shifts onshore, we were ready. CpCo(CO)₂ has been manufactured in the United States for several years and is already qualified by multiple leading semiconductor vendors. CCTBA and DCOC are next — expanding our US-made cobalt portfolio to cover the full range of CVD and ALD deposition needs.
Our Cobalt Portfolio
CpCo(CO)₂
US-manufactured, multi-vendor qualified The industry’s preferred precursor for selective cobalt deposition and copper capping in advanced interconnect. Produced in the USA at high volume manufacturing scale – hundreds of kilograms annually.
CCTBA
US manufacturing in progress Dicobalt hexacarbonyl tert-butylacetylene. Used for cobalt seed layer and gate fill applications.
Cobalt Octacarbonyl
US manufacturing in progress Dicobalt octacarbonyl. Widely used for ALD cobalt thin film deposition across metal, nitride, and oxide surfaces.
Explore all of our Cobalt product
Why Ereztech
10+ years supplying the industry
proven quality, proven reliability
US-qualified at scale
CpCo(CO)₂ already approved by multiple SEMI vendors
HVM ready
hundreds of kilograms annually, built to grow with your production
Any packaging format
we work to your vessel specs
Vessel cleaning & reconditioning