Flex PCB - Prototype & Production Flexible Circuit Manufacturing in the USA

A few of our happy customers.

Flex Circuits.

Learn more about our prototype and production flexible and rigid-flex PCB fabrication services. Get low-to-high volume rigid-flex, and flex PCB quantities manufactured with industry leading quick turnaround times for rigid-flex and high density interconnects (HDI) PCBs. We pride ourselves on on-time delivery. Let us know how we can help with your next mission-critical flex circuit.

PCB services.

Rigid-flex PCBs
High quality rigid-flex printed circuit boards.
Flex PCBs
Fully flexible printed circuit boards for all markets.
High Density Interconnect PCBs (HDI PCBs)
Circuits with high reliability and performance.
Multilayer Flex Circuits
Single, double, and multilayer flex and rigid-flex circuits.

Markets served.

Medical
Diagnostic hardware, medical electronics and medical imaging devices.
Telecommunications
High frequency chip carriers and fiber-optic communication products.
Industrial & Commercial
Robotics, consumer electronics and LED lighting applications.
Automotive
Camera modules, lighting and other automotive electronics (LIDAR).

Highlighted manufacturing capabilities.

As a leading prototype-to-production flexible PCB manufacturer, we have flex and rigid-flex PCB capabilities that other companies can't compete with. As your flexible circuit supplier, you will be able to manufacture boards smaller line trace spaces and micro-vias. Consult with our flex PCB design and engineering services team to help you determine what the optimal technologies are for your project's application. We also offer extremely fast quick turn flex circuit prototyping services. View our full flexible and rigid-flex capabilities or contact us to learn more.

We've got you covered for both prototype and production quantities.

prototype to production flexible and rigid-flex PCBs

With Flex PCB, you skip the PCB brokers and go straight to the source. Start prototyping in our USA facility or directly where your production run will be in China (one of our two Flexible PCB manufacturing facilities in China). This allows you to know what materials and components are most effective during large volume PCB fabrication runs.

It's not just our design and prototype-to-production manufacturing capacity that makes Flex PCB different; our technical, engineering, procurement and customer services gives us a competitive advantage.

Do you need inventory stocking for your flex or rigid-flex PCBs? Get pull and push inventory that meets your specific needs. Order in high volume, but let us manage your inventories with JIT (Just in Time) deliveries.

We also provide flex and rigid-flex PCB assembly services that reduces your vendor count, production delays, and quality issues. From single component to complicated box builds, let Flex PCB do your component sourcing, assembly, and testing.

Example rigid-flex and flex PCBs manufactured by us.

What is a Flexible Circuit?

A flexible circuit is a printed circuit board manufactured using substrate that is naturally flexible. Flex circuits are typically manufactured using a polyimide (Kapton) material and one to multiple layers of copper. Popular suppliers of flexible materials are DuPont and Panasonic (we typically stock both). A flexible printed circuit board material will bend without snapping. However, the copper will likely crack if the bend causes a crease. A flexible circuit shouldn't be confused with a very thin "semi-flexible" FR4 board. A thin (<10 mil) FR4 board will flex, but because FR4 is brittle, will eventually snap.

What are the differences between Flex and Rigid boards?

Flexible printed circuit boards are quite different than rigid boards:

Material; Rigid boards are typically made out of FR4 (glass-epoxy compounds) while flexible circuits are made from polyimide. There are cases when rigid boards are built with polyimide, but it isn't as common.
Coverlay; Flex pcbs either have a flexible mask or coverlay while rigid boards typically just use a solder mask. When a coverlay is used, the openings are routed, or laser cut. Then an adhesive (typically 1 or 2 mils thick) is used to adhere the coverlay to the flex.
Stiffeners; Flexible printed circuit boards typically use FR4 or polyimide stiffeners to stiffen specific non-flexing regions. Stiffeners are either laminated to the flex or adhered using a PSA (pressure sensitive adhesive). Rigid boards do not need stiffeners.
Permittivity; There is a wide range of relative permittivity (dielectric constants) for rigid board materials while flexible polyimide material is typically 3.4.

What are different types of Flexible PCBs?

There are three classifications of flexible PCBs:

Flex; A flexible pcb is a flex that could have polyimide stiffeners for zif regions, however, the overall circuit is 100% flexible.
Flex with stiffener(s); If a flex circuit needs to be rigid in certain areas, FR4 or polyimide stiffeners can be added by lamination or PSA (pressure sensitive adhesive). Stiffeners work well for flex circuits with components only on one side.
Rigid-flex; A rigid-flex board is a combination of a rigid board and flex circuit. The flexible layers are sandwiched between two rigid boards using no flow prepreg. This type of flex works well when there are components on both the top and bottom sides.

What are benefits of Flex PCBs?

There are many benefits to use a flexible printed circuit board in your application:

Lightweight; Flex circuit's polyimide material is lighter than FR4.
Thin; A typical 2-layer flex can range in thickness between 4.4 and 10 mils.
Flexible; This is obvious, but with the ability to make bends, you have more freedom to decrease the overall mechanical footprint.
High Temperature; Polyimide flex materials are suited for very high temperatures compared to FR4. They are also resistant to oils, gases, and acids.

We provide Flexible and rigid-flex PCB fabrication in the USA and/or Offshore depending on your requirements.

Flex PCB.

Prototype rigid-flex and flex PCB fabrication & manufacturing.