about ei microcircuits
leading the way at ei microcircuits
EI Microcircuits was incorporated in 1984. Our goal was to address a little-known technology that was to be the foundation for today’s miniaturization of electronics, known as surface mount technology, or SMT.
As an early adopter of SMT, few rules or production know-how were available at the time. We became an early pioneer in SMT pad and stencil design and one of the first EMS contractors to own and utilize robotic SMT placement machines.
Having now expanded to 3 manufacturing facilities with automated placement lines, solder robots and conformal coating lines, EI Microcircuits excels as a high mix, low-to-mid volume, technology driven EMS supplier. In addition, EI Microcircuits also offers value added services such as box-build, potting, warehousing & logistics, testing and much more.
After more than 30 years as a privately-owned family business, we continue to invest in state-of-the-art equipment, technologies, and people to maintain our place as a leader in contract manufacturing.
We believe…
Our employees are the heart of our business, and our customers are why we are in business. Therefore, at EI Microcircuits, creating the shortest connection between the two establishes a successful, efficient, long-lasting partnership unequaled in the EMS industry.
That a quality product is the direct result of knowing our customers’ needs. The interaction between the customer and the employee who is responsible for its manufacture is the means to do this.
In acting professionally, understanding the facts, and striving for excellence are key hallmarks of our daily business life.

Our founders, Robert and Lenore Else.
In loving memory of Robert K Else September 9, 1935 – June 11, 2005
Our Company Values
Mission
To be the premier provider of innovative solutions.
Vision
To focus on technology solutions allowing us to expand our reach across the nation.
Purpose
EI Microcircuits will be the premier manufacturing solutions provider to our customers in order to invest in our employees, their families, and the communities in which we live and serve.

innovative

customer-focused

ethical
our Story


1984
Bob Else founded EI Microcircuits in Mankato, MN to capitalize on the newest technology – the surface mounting of electrical components (SMT).


1989
Built Corporate Headquarters with a Manufacturing Facility on Pohl Road in Mankato, MN.


1997
Received ISO 9001 Certification.


1998
Expanded Corporate Headquarters and extended the Manufacturing Facility into a second building.


1998
Expanded Corporate Headquarters and extended the Manufacturing Facility into a second building.


1999
Received ISO 13485 Certification.


1999
Received ISO 13485 Certification.


2003
Set up Lead-Free manufacturing lines and processes.


2004
Expanded our Corporate Headquarters again and added a third building onto our Manufacturing Facility.


2005
Opened a second location Manufacturing Facility in St. Peter, MN.


2009
Received the IPC Lead-Free Process Certification.


2011
Were the first EMS to be awarded United Technologies Corporation’s Fire and Securities Supplier Gold Certification. Received second award Supplier Gold Certification in 2014.


2014
Celebrated our 30th anniversary!


2015
Opened Ninja Circuits rapid prototype company and acquired Holmgren Associates to add to our current manufacturers’ rep group.


2015
Opened Ninja Circuits rapid prototype company and acquired Holmgren Associates to add to our current manufacturers’ rep group.


2017
EI Microcircuits earns AS9100-D Certification (Aerospace & Defense).


2017
EI Microcircuits earns AS9100-D Certification (Aerospace & Defense).


2018
We continue to be an innovative solutions provider to our customers.


2019
Opened EI Sensor Technologies, offering Thermistors, RTDs and Probe Assemblies for temperature measurement and control.
hear it from our customers
"A delightful company to work with. Could not have done it without your expertise."
"EI excels in responsiveness, support and flexibility. I very much appreciate EI’s ability to adapt on the fly."
"I appreciate the work EI does most of all because it makes my job easier."
"Overall, EI does a great job in dealing with everything we throw at them. They are responsive and understanding of us, even though it may not always be the most reasonable of requests. As a buyer, I feel lucky to have a supplier that works with us like they do."
"Working on a project that had a board that was simply not manufacturable the way it was set up, EI went above and beyond to help with engineering and still met a very short deadline."


let's talk
EI Microcircuits operates multiple climate-controlled facilities designed for scalability, technical excellence, and built-in disaster resilience—each fully equipped to support today’s most advanced electronic assemblies. Let us be the solution to your next project—Contact Us, Request a Quote, or Schedule a Tour today!
MANKATO, MN
1651 Pohl Road
Mankato, MN 56001
P: 507.345.5786
ST. PETER, MN
2011 Klein Street
St. Peter, MN 56082
P: 507.934.5722
*Each facility is configured to support your production needs. While maintaining continuity with each other in equipment, training and process control. All facilities share the same data center to allow for seamless manufacturing between locations.