Multilayer Flex PCB

PCBA aims to make you a high-quality PCB that meets your needs and costs as little as possible. We offer various PCBs, from complex multi-layered flex PCBs to two-sided surface mount designs.

How do we manufacturing step by step

Process of Multilayer Flex PCB Manufacturing

Step 1​


Creates drill, rout, and image files and the automatic optical inspection (AOI) and test files necessary to carry out the various manufacturing activities. It also involves data cleaning, verification, and editing of drill/rout data, penalization, drill, rout, and image file generation.

Step 2

Photo Plotting

Laser photoplotters generate photo tools for the production of solder masks and silkscreen. Each layer is mapped to a specific part of the film. All interior and exterior coatings have now been produced using laser direct imaging.

Step 3

Imaging And DES (Develop/Etch/Strip)

The primary image traces are placed on the PCB using the imaging technique, followed by applying pads and metal ground. Finally, the DES procedure is used to prepare the copper design for plating.

Step 4

AOI (Automated Optical inspection)

An Optical Optical Inspection (AOI) is a process used to compare the design data on the printed circuit board (PCB) panel to the actual design data. This is done before the PCB is laminated together.

Step 5


Before lamination, oxide is applied to the inner layers of multilayer PCBs to make them rougher to increase the strength of the laminate bond. Oxide aids in preventing delamination, which occurs after the manufacturing process and occurs when layers of a PCB detach from one another or the laminate to the conductor foil.

Step 6


A multi-layered PCB is made using a hydraulic press to laminate different prepreg layers, an epoxy-infused fiberglass sheet with conductive core materials.

Step 7


Holes are drilled using precision drilling systems that use fixed carbide cutting machines designed to remove chips in high abrasive substrates quickly.

Step 8

Electroless Copper Deposition

All the exposed areas of the panel, including the hole walls, are electroless plated with a thin layer of copper. This procedure is required to apply a thin layer of copper to the fiberglass hole walls so that the holes can later be electroplated.

Step 9

Dry Film

A bare copper panel’s exterior layers are first covered with a dry film, a substance that can be photographed. The interior layers of a multilayer printed circuit board (PCB) are comparable to this technique. By using laser direct imaging, the dry film is exposed.

Step 10


Electroplating is the subsequent step in the copper plating process, which involves the application of copper to the conductive surfaces of the printed circuit boards (PCBs) and to the holes of the PCBs to meet the design requirements of the circuits.

Step 11

Strip and Fetch

The SES process will be applied to the panel. The resist shall be disengaged from the panel. Now visible and free of tin, the copper shall be engraved away, leaving traces and pads around the holes and other copper patterns.

Step 12

Soldering Mask and legend

An LPI solder mask is an epoxy-based resist material that is photo-sensitive. It is applied to the entire panel through a screen printing process. Following the application of the solder mask, the legend may be used through the same screen printing procedure as the solder mask.

Maybe you are looking for your industry

Benefits of Multilayer Flex PCB

Multilayer Flex PCB 1

Assembly Error Reduction

Flex circuits remove human error from hand-assembled wire harnesses through accurate design and automated manufacture. Flex circuits are exclusively routed to the places stated in the detailed design plan, except for faults caused by manufacture.

Multilayer Flex PCB 2

Design Freedom

Unlike rigid boards, many lex circuits are not constrained to two dimensions. Flex circuits have a wide range of design options since they may be made to be as flexible as wire or ribbon cable. Flex circuits can function in the roughest settings, satisfying extraordinarily complicated and impossible setups.

Multilayer Flex PCB 3

Increased System Reliability

Historically, the linking point has been where most of the circuit failures have happened. Flexic circuits can be built to have fewer connections, which increases the circuit's reliability.

Multilayer Flex PCB 4

Simplified Circuit Geometry

Surface mount electronics are used by Flexible Circuit Technologies to mount the electronics directly on the circuit, significantly improving the design. Flex circuits allow you to create intricate patterns that would have been almost impossible with rigid boards.

Sets The Standard For High Quality Care Since

Why Us

We produce high-quality multilayered flex PCBs from complex layouts. With us, you get unparalleled technical experience at affordable prices and the most advanced solutions available. Our customers need PCB production that’s out of the reach of traditional circuit board manufacturers. Have a complex idea that a typical board house can’t produce or assemble?

  • Operational Excellence
  • Quality Processes
  • Advance Machining Technology
  • Quick Turn Circuit Boards
7/24 Tech Support
ISO-9001 Certified
DFM, SMT, and Thru-hole Capabilities
100% E-test and AOI Inspection

Get your multilayer flex PCBs built fast! Email us and get your PCB quote. Contact Us

Applications of Multilayer Flex PCB

As one of the industry’s leading providers of multilayer flex PCB, PCBA PCBs are widely used in various applications and projects. From simple to most complex circuit board applications, we have provided suitable PCBs for them.

  • Aerospace
  • Automotive
  • Communications
  • Consumer Electronics