Electronics & Semiconductor
Top 2 Semiconductor Packaging Manufacturers in Wisconsin 2026
Last updated
2listings
FirmsLedger lists 2 semiconductor packaging manufacturers headquartered in Wisconsin. They are spread across 2 cities: Oconomowoc and Pleasant Prairie.
By specialty, Wisconsin has PCB manufacturing (2) and PCB assembly (2) listings.
| Company | City | Specialty | Phone | Website |
|---|---|---|---|---|
| JJISCO, INC | Oconomowoc | Custom Engineered Component Manufacturing | (262) 569-7479 | jjisco.com |
| ECM USA | Pleasant Prairie | Low pressure vacuum carburizing (LPC) | (262) 605-4810 | ecm-usa.com |
ECM USA
Pleasant Prairie, Wisconsin
ECM USA operates from Pleasant Prairie, Wisconsin, positioned between Milwaukee and Chicago. The company serves as the American subsidiary of the France-based ECM Group, which consolidates thermal, gas, and atmosphere management expertise across multiple brands headquartered near Grenoble and Montpellier.