Honeywell Aerospace Plymouth microelectronics campus
Large load · 12001 HIGHWAY 55, Plymouth, MN
Honeywell operates a microelectronics campus at 12001 State Highway 55 in Plymouth, Minnesota, one of two radiation-hardened microelectronics plants in its Aerospace segment, the other being in Clearwater, Florida. The Plymouth site has been making application-specific integrated circuits for NASA and other space agencies for nearly six decades. In September 2024 the Defense Department awarded the Minnesota foundry $25.8 million through its Defense Production Act Investments office to make strategic radiation-hardened microelectronics. Honeywell's May 2025 profile says more than 400 people work at the site and that a new generation of microelectronics is being developed there.
Overview
Honeywell's May 2025 profile of the Plymouth campus says the site has been at the forefront of integrated circuit technology since 1965 and that more than 400 people work there. The circuits made in Plymouth are designed to withstand radiation and extreme temperatures, and they have supported NASA and other space agencies across a long line of missions, including rovers on Mars and spacecraft that orbit distant moons. Honeywell says the site is now developing a new generation of microelectronics, the S90 line, which it describes as offering higher processing speeds and more capability in the same compact space.
Profile
- Defense funding for the Minnesota foundry
- On September 9, 2024, Inside Defense reported that the Defense Department had awarded Honeywell $25.8 million to domestically manufacture or procure strategic radiation-hardened microelectronics. The award was made through the Defense Production Act Investments office and funds production through a Defense Microelectronics Activity-approved process. The Pentagon said the investment would also sustain 90-nanometer technology development at Honeywell's microelectronics foundry in Minnesota, and it tied the award to the 2024 National Defense Industrial Strategy's goal to expand domestic production and increase supply chain resilience.
- Two radiation-hardened plants in one segment
- Militaryaerospace.com reported in August 2024 that the Honeywell Aerospace segment operates two advanced radiation-hardened microelectronics manufacturing facilities, one in Plymouth and one in Clearwater, Florida. The article describes them as among the few remaining U.S. facilities for weapons-grade rad-hard integrated circuit manufacturing able to withstand radiation doses that exceed 1 megarad. That positioning explains why the Plymouth foundry is central to Honeywell's supply of trusted components for strategic and space programs.
Facility
- Activity
- Radiation-hardened microelectronics and application-specific integrated circuits
- Industry
- Manufacturing
- Site type
- Facility
- Operating status
- Operating
Related records
Timeline
- Sep 9, 2024
- Defense Department awards Honeywell $25.8 million for strategic radiation-hardened microelectronics through the Defense Production Act Investments office
DOD commits $26M to uphold radiation-hardened microelectronics supply chain | InsideDefense.com
- May 28, 2025
- Honeywell reports more than 400 people at Plymouth and a new generation of microelectronics in development
We Make Cool Things in Plymouth, Minnesota: Space-Ready Microelectronics