Leading the way for over 40 years

Flexible PCBs

If you are specifically looking for flex PCBs for your high-density, ultra-compact or high-performance equipment or devices, you can count on Mer-Mar Electronics. We have over 4 decades of experience in fabricating and assembling the most high-quality flexible circuit boards. Not without reason; This is made possible on account of our state-of-the-art infrastructure as also our team that brings years of experience and passion to the each and every project. The fact that we are equipped with industry best practices means that you do not need to make costly mistakes or reinvent the wheel. Count on us for your rigid, flexible and rigid-flex PCB requirements.

A flex PCB utilizes a flexible based material, with or without a flexible circuit coverlay. On account of the material used and its structure, flex circuit boards, as their name suggests offer flexibility and render them fit for use in compact spaces.

Meet your Unique Requirements with
our Flexible PCB Fabrication Services!

State-of-the-art facility – Our superior equipment and experienced manpower translates into high quality PCBs. No matter how complex the design with blind/buried vias or how many layers you require, we have the necessary expertise to offer you quality products.

Stringent manufacturing Processes – Strict adherence to IPC guidelines and industry best practices ensure a high degree of reliability. In addition, our robust testing protocols do not leave room for errors.

Catering to all volume requirements – From prototype quantities to full production runs, we cater to all volume requirements. What this means is that you do not have to worry about scaling up operations at any point in time.

Quick turnaround time – Quick go-to-market is the source of one of the largest competitive advantages in a crowded marked. Our quick turnaround times ensure that you reap this advantage.

Flexible Printed Circuit Board Services

Flexible PCBs

Flexible PCB Fabrication

As a leading PCB fabrication company, we are well equipped to provide flexible PCB fabrication with high layer and ultra-dense component counts, conformal coating & potting, complete mechanical assembly, fixtures and fixtureless in circuit or functional testing, turnkey, consignment or mixed model or any other requirements of clients. Our reliable flexible printed circuit boards are being selected by multiple industries!

Flexible PCB Fabrication

Heavy Copper Flexible PCBs

If you are looking for boards with high thermal management capabilities, you can count on us to provide you heavy copper flex boards. They offer a number of advantages such as easy integration with high-power circuits and control circuits as also increased current carrying capacity. Our expertise is in manufacturing heavy copper flexible PCBs in a cost-effective way and with proven design. Our team will review your design and ensure it would be manufactured with the highest quality and standards.

Flexible Circuit Boards

Flexible PCB Design

From material to vias; our experts take a number of factors into account in flexible PCB design. Some of the aspects that go into our flex circuit board design include the operating environment, bend ratio, vias, controlled impedance, signal integrity and more. Our range of flexible printed circuit boards are designed with a wide range of configuration and custom specifications.

Flexible Printed Circuit Boards

Flexible PCB Finishes

Count on us to offer you a wide variety of circuit board finishes such as ENIG Gold; OSP, Immersion silver, Immersion Tin, HASL and more. We ensure that the finish options are suggested in a manner that they complement the functionality and environment of the application and improve product performance. Our range of flexible PCBs are fabricated in response to the requirements of several industries and market trends.

Flexible Printed Circuit Board

Fabricating a wide variety of boards

Whether you require single, double-sided or multi layered boards, you can count on us to seamlessly deliver them. Our multilayered boards can be designed using blind and buried vias as well as plated through holes. At Mer-Mar Electronics, we also provide advance flexible PCBs which could have high layer count, large panel size flexible PCBs, controlled impedance, microvias, and more based on your any kind of specific requirements.

Flex PCB Fabrication

Flexible PCB Repair & Rework

Should you face an issue with ripped or cut flexible material or heat damaged pads or damaged conductors, you can count on us for meticulous repair and rework. Our personnel have hands-on experience in flexible printed circuit boards repair and rework with a high degree of precision.

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The detailed process of fabricating Flexible PCBs involve the following steps:


This step involves cutting the material as per different sizes, designs and layout specifications.


Depending on the exact design, this involves drilling different holes such as alignmnet holes, testing vias, component holes and more.

Through-Hole Plating

Post drilling the next step involves through-hole copper plating to establish connection between layers.

Dry film lamination

Pre-treated boards are passed through hot roller to laminate the dry film on it.


The designated circuit pattern image is transferred to the dry film to cretae an exposure area.


By casting UV light on the film, the dry film on the exposure area is hardened while the one on the non-exposure area can be removed.


This process involves initiating a chemical reaction on the non-exposure area and ensuring the protected area remains unchanged.


At this stage, the dry film covering the circuit pattern is removed.

AOI (Automated Optical Inspection)

A robust process, this checks the quality of the circuit boards.

Coverlay pre-lamination

An insulating layer called the coverlay is introduced to protect the circuit boards.

Hot Press

Next, the board is passed through a hot press to ensure adhesion.

Metal Coating

The bonding area is coated with metal, often gold or nickel.

Screen Printing

Silk screening is applied to print information such as logos.


Robust electrical and functional testing ensures efficacy of the circuit boards.

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Some of the other advantages that Flex PCBs offer include:

Flex Printed Circuit Boards

Reduced assembly time and costs

Not only do they require less manual labor, they also take away the high cost of routing, wrapping and soldering wires. The fact that they also lend themselves to reduced errors in PCB assembly, is an added perk.

Freedom of Design

As opposed to rigid boards that offer restrictions, flex boards offer endless design options. In fact, at Mermar Electronics we take great pride in designing highly complex boards that can stand the test of time in harsh environments.

Ease of Installation

Once again as opposed to rigid boards, flex PCBs lend themselves to ease of installation. With flex boards you do not have to contend with space or weight issues.

Ideal for high-density Applications

With miniaturization being the need of the hour, the demand for flex PCBs has increased as it frees a lot of space and can fit in easily.

Improved heat dissipation

With the compact design of PCBs, it allows a shorter thermal path and hence lends itself to improved heat dissipation.

Maximum Reliability

With fewer interconnections, Flex PCBs offer improved reliability.

Reduced Weight

Flex PCBs are being extremely thin; they allow not only for streamlined designs but also reduced package size and weight.

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Flexible Printed Circuit Board Capabilities

At Mer-Mar Electronics, the following are our capabilities when it comes to Flexible Circuit Boards:

Layers Multilayers up to 20 layers
Minimum Annular Ring 4Mil
Copper Weight 0.5-2.0 Oz
Minimum Hole Diameter 8 Mil
Materials PI, PET, PEN, FR-4, Polyimide (Kapton), Adhesiveless Copper Clad Base Material, High Performance Epoxy Laminate and Prepreg, and High-Performance Polyimide Laminate and Prepreg.
Stencils Laser cut stainless steel and Nano-coating
Surface Treatments Lead-free: ENG Gold; OSP, Immersion silver, Immersion Tin
Max / Min Board Size 0.2″ x 0.3″ Max: 20.5″x13″
Copper Thickness 1/3oz – 2oz
Max / Min Insulation Thickness 2mil/0.5mil (50um/12.7um)

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Application of Flexible PCB Fabrication

Flexible circuit boards find both static as well as dynamic application. While a static application involves designing circuits with a small amount of flex, a dynamic application involves the circuit being flexed repeatedly. Such applications are designed with RA Copper.

Some of the industries that Flexible Circuit Boards find extensive application in, include:

  • Electronics
  • Manufacturing
  • Automotive
  • Medical
  • Aerospace
  • Military and Defense
  • Telecommunications
  • Transportation


Looking for flexible PCBs, flexible PCBs fabrication or any custom flex printed circuit boards for your Next project? Send us inquiry to Get a Quick Quote based on your custom requirements.

If you have any queries regarding to our flexible PCBs or need an urgent assistance, then please don’t hesitate to contact our team of skilled personnel’s. Send us an email with your queries at sales@mermarinc.com or call us at (760) 244-6149. We are looking forward to hearing from you.