EI Microcircuits provides electronic design, manufacturing and final packaging services.

Founded in 1984, EI Microcircuits serves the electronics industry with contract design and manufacturing of custom and standard SMT and PTH assemblies.

ISO 9001 and ISO 13485 certified, EI offers a full range of services from design through distribution.

Although we work with customers in a wide range of markets, we primarily serve the medical device and industrial controls industries.

We have two manufacturing facilities located in Mankatao and St. Peter, Minnesota.


"Production run" means making a lot of one product at once. The factories listed under "production" can produce small and/or large quantities. The minimum order for a production run can vary from factory to factory (some have no minimum, some require a dozen, and some require up to 1,000 to be made at once)