What Are Multilayer Printed Circuit Boards?

A multilayer printed writing circuit board contains three or more copper conductive layers, and usually with plated through holes. If the multilayer circuit board is constructed of both flexible and rigid materials, it’s referred to as a rigid-flex circuit board. A rigid-flex circuit board is a 3D interconnect that can be bent and folded into almost any shape. Rigid-flex technology allows designers to replace multiple PCBs with interconnecting wires and/or cables into one single unit, offering improved performance and increased readability.

Rigid-flex circuit board technology reduces the need for bulky, heavy wire harness cables within an electronic system. It also saves installation time and part costs and results in a cleaner — and typically more compact — top level assembly.



Cirexx is your industry-leading PCB provider because everything is completed under one roof with our own equipment in our state-of-the-art facility. We use the latest technology, software, a secure network, and our own streamlined processes to deliver exactly what you need when you need it.


  • Experience and knowledge to answer all of your design and manufacturing questions
  • Knowing how to design for manufacturability and the potential cost drivers of a project
  • Ability to handle complex jobs
  • Certified to work with a variety of industries, including medical, aerospace, and the military

We’re also not content with the status quo, which is why we keep up to date on the latest technology and equipment within the industry.


Our wide variety of certifications and registrations allow us to work with any industry.

AS9100 – The aerospace PCB quality standard
ISO 9001 – Provides general quality assurance guidelines
Military – MIL-PRF-31032 1-4, 55110, and 50884
J-STD-001 ES – Standard quality for aerospace, military, and medical work
UL materials – Ability to work with and have access to a broad spectrum of materials
ITAR – Fully vetted ITAR staff that is trained when it comes to ITAR rules and regulations

Certifications & Registrations


If you have a job that needs to be done in a hurry, look no further than Cirexx. We have the quick turn PCB capabilities to meet your tough project deadlines and the procedures in place to ensure that your order is expedited throughout the entire process. Depending on the complexity of your project, we can provide a quick turn PCB fabrication in as little as 24 hours.

Quick Turn Experience


"Wanted to let you know that you guys absolutely nailed it! For a board of this size and number of components to be up and running so quickly is a real testament to your team. Again, please relay our gratitude."


"Pass our appreciation on to the team that made this happen quickly to help us meet on pressing schedule. We have received these and have started installing these on the flex cables to eliminate future problems."


"We got the boards, early, and so far everything looks great. One mole successfully whacked! Please thank your team for getting this one out ahead of the holiday weekend."


"Just a quick note, I’ve been inundated with fresh assemblies from Cirexx; so far, so good. Just wanted to say thanks to you and your team for helping us meet our deadlines."
Electrical Engineer


"The boards just arrived and they look really good. Thank you for keeping me up to date with the progress of them, and providing the rush shipment."
R&D Design Engineer


"I’m the gentleman that contacted you a month or so ago about the prebake profile of the flexible circuit board. We have fully processed the complete run of the boards and had spectacular results. It is the only time we have had a 99% first pass yield for this particular board. Good job!"


"We’ve received and tested the boards and they look great. Thanks for all your support this past year. Happy holidays and looking forward to continuing to work with Cirexx."
Katrik Johnson
Senior Electrical Design Engineer


"I would like to thank you for taking care of all the issues with this order (on our side and yours) in a prompt and professional manner. It is always a pleasure doing business with you."
Project Engineer


"Just when I get not so good news from another supplier, I get really good news from Cirexx!! If you ever want to branch out into other areas, say cables, just let me know. I could use more suppliers like you! Thanks for making my day…again!"


Looking for a Multilayer PCB Quote?

We use a well-organized process and the right software to provide you with a quote within 24 hours. After you upload your information, including any fabrication drawings or schematics, our system and engineering staff will analyze the data and provide us with a comprehensive document so we can take a closer look at your project.

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Find out how we can help with your next PCB project.