pcb prototyping

At EI and our prototype division, Ninja Circuits, we offer a complete range of prototyping services to meet every customer’s needs. From quick-turn proof-of-concept builds to fully engineered pre-production evaluations, we have the resources and experience to get the job done right.

our prototyping services

Accelerate development with fast, flexible prototyping designed to refine your product and streamline production.

Proof of Concept

Used for low volume, fast turnaround and build per customer documentation

One-Time Build

No quantity limits, engineering review as needed and build time as required

New Product Introduction (NPI)

Full engineering review and production documentation and 5 day turnaround time after receipt of material

Engineering Support

Knowledgeable design and electrical and project engineers on staff to help turn your ideas into reality. Offer DFM review to save time and money by designing and making the product right the first time.

Material Procurement

Use our purchasing power to reduce material costs and leverage our inventory of thousands of commonly used components

Types of Assemblies

Lead or RoHS Compliant, Flex or Rigid Flex PWB, ITAR and IPC Class I, II and III

timelines

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24 Hour

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48 Hour

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5 Day

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10 Day

our pcb engineering process

01.

Design Review

We collaborate early to review schematics and conduct Design for Manufacturability (DFM) analysis—ensuring your layout is optimized for efficient, high-yield production.

02.

Prototyping & Validation

Our rapid prototyping services turn designs into functional units fast, enabling thorough testing, feedback, and early design validation.

03.

Pre-Production Optimization

We fine-tune materials, processes, and test plans to ensure a smooth transition from prototype to full production—reducing risk and ensuring scalability.

04.

Full-Scale Production Support

With engineering oversight, quality control, and documentation throughout, we scale up seamlessly while maintaining precision and consistency across every unit.

Applications for PCB Prototyping

medical

EI Micro’s medical PCB prototyping ensures rapid, regulatory-ready iterations that accelerate safe device development.

industrial

We prototype durable, production-ready industrial PCBs that meet high-load, high-reliability performance demands.

energy

EI Micro’s prototyping process delivers energy system PCBs that are rigorously tested for stability and longevity.

agriculture

Our agile prototyping helps bring precision farming technologies to life with field-ready, scalable PCB designs.

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

We deliver flight-ready PCB prototypes engineered with traceability, safety, and aviation-grade precision in mind.

military

EI Micro’s defense prototyping services ensure rapid deployment of rugged, spec-compliant PCBs for mission-critical systems.

Security and Surveillance

Our fast-turn prototyping supports secure, real-time surveillance systems with performance-driven PCB designs.

our certifications

Logo: AMTIVO, ISO 13485:2016 Certified, Medical Devices, enclosed in a rounded rectangle.
Logo: AMTIVO, ISO 9001:2015 Certified, Quality Management. White background with black text and outline.
AS9100 D Certified logo, white background with black text, AMTIVO logo, and "Aerospace."
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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.