Expect Solutions

electronics manufacturing services

Delivering precision, innovation, and reliability.

end-to-end solutions

At EI Microcircuits, we pride ourselves on our unwavering commitment to challenging the status quo in providing innovative solutions to our customers.

advanced capabilities

EI is a high-mix, low-to-mid volume manufacturer specializing in complex assemblies. We offer full box-build services and add-on capabilities like test development, engineering services, and logistics.

industry partners

EI Microcircuits serves a diverse range of industries, offering tailored electronic manufacturing services to meet the specific needs of each sector.

Delivering precision, innovation, and reliability.

end-to-end solutions

At EI Microcircuits, we pride ourselves on our unwavering commitment to challenging the status quo in providing innovative solutions to our customers.

advanced capabilities

EI is a high-mix, low-to-mid volume manufacturer specializing in complex assemblies. We offer full box-build services and add-on capabilities like test development, engineering services, and logistics.

industry partners

EI Microcircuits serves a diverse range of industries, offering tailored electronic manufacturing services to meet the specific needs of each sector.

Why our customers Choose EI Microcircuits

Gear and circuit board symbol, black and red. Represents technology and mechanical processes.

innovative

Two hands shaking with a red check mark above, symbolizing agreement or success.

customer-focused

Document with magnifying glass, highlighting a bar graph, in red.

ethical

Badge with a red checkmark and ribbon, black outline with red accents, symbolizing quality assurance.

quality

A black and red circuit board with six red circles, representing data.

technology

certified excellence you can trust

Partner with EI Microcircuits—certified to the highest industry standards and trusted across medical, defense, and industrial markets for precision, quality, and compliance.

expect solutions

EI Microcircuits delivers smart, scalable solutions for high-mix, low-to-mid volume production. Our in-house services—box-build, coating, overmolding, potting, testing, and logistics—support critical needs across medical, defense, and industrial markets.

Automated robotic arm placing components on a circuit board in a factory setting.

our industry experience

medical

The medical industry has been a core focus throughout EI Microcircuits’ history and remains one of our most established and trusted markets.

industrial

From oil refineries to large-scale machine controls, to power generation or hand-held computers, EI fulfills the need for this ever-changing technology sector.

energy

EI Microcircuits delivers precision-engineered electronics for the energy industry, ensuring reliable performance in demanding environments through our commitment to quality and innovation.​

agriculture

We provide for a wide variety of agricultural sectors, ranging from livestock processing and monitoring, to the highest technology farm implements, to automotive accessories and controls.

EI Microcircuits builds high-layer count, high-performance assemblies for the emerging AI market. Our advanced SMT and quality systems ensure reliable, complex builds for HPC applications.

aviation

From cockpit to control surface, precision matters. EI Microcircuits delivers tightly controlled, high-reliability assemblies built to perform in the rigorous conditions of modern aircraft systems. Our disciplined processes ensure consistency, compliance, and confidence at every altitude.

military

When failure isn’t an option, EI Microcircuits rises to the challenge. We produce rugged, mission-ready electronics designed to operate in the harshest environments—on the ground, at sea, or in the air. Proven reliability, built into every defense application we serve.

Security and Surveillance

EI Microcircuits engineers dependable, high-performance electronics for security and surveillance applications—built to meet strict standards for mission-critical reliability and real-time responsiveness.

our certifications

ISO 13485:2016 certified badge, AMTIVO logo, text "Medical Devices".
Logo for AMTIVO. ISO 9001:2015 Certified for Quality Management. Features a stylized "A".
A square badge with "AMTIVO" logo and "AS9100 D Certified Aerospace" text.
Blank white canvas.
White background.
Empty white background.

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."

Two women in lab coats soldering at a workbench. One has gray hair and glasses.

Electronic Insights

A person is holding a motherboard in their hands in a black and white photo.

Field Programmable Gate Arrays (FPGA) Explained

July 7, 2025
Learn how Field Programmable Gate Arrays (FPGAs) work, their types, benefits, and industry applications—from prototyping to high-performance computing.
A bunch of green circuit boards are stacked on top of each other on a table.

Understanding Surface Mount Technology (SMT)

By EI Microcircuits • July 9, 2025
Explore Surface Mount Technology (SMT) in electronics manufacturing—how it enables compact, high-performance assemblies for medical, aerospace, and industrial applications.
A woman is looking at a circuit board with a magnifying glass.

What are Box Build Assemblies in Electronics Manufacturing?

By EI Microcircuits • July 9, 2025
Discover what box build assemblies are in electronics manufacturing. Learn how final product integration—PCBA, enclosures, wiring, testing—boosts quality, speed, and reliability.
A circuit board with the words class 1 2 and 3 on it

Understanding IPC Class 1, 2, & 3 Certifications

By EI Microcircuits • July 9, 2025
Learn the differences between IPC Class 1, 2, and 3 certifications for PCB assemblies. Discover how each class impacts manufacturing quality, reliability, and industry use.

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!

Contact Us 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

MANKATO, MN

69 Power Drive
Mankato, MN 56001

P: 507.386.9160

*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.