Rigid Flex PCB

What is Rigid Flex PCB?

In simple words, a Rigid Flex PCB is a combination of two types of PCBs: Rigid PCB and Flexible PCB.

A rigid PCB is hard and has an unbending base. Sometimes, we need such a PCB, but sometimes, we need PCBs to bend. On the other hand, flexible PCBs can adjust in any shape, so they can easily work in smaller spaces and bend without compromising performance. However, in most cases, we need the combination for both rigid and flexible PCBs, and this combination is found in Rigid Flex PCBs.

Rigid Flex PCBs have the benefits of both worlds, and not only that, but they are also cost-effective and more reliable as compared to Rigid PCBs. These PCBs have a higher component density, fewer parts requirements, long life, and exceptional quality control.

Because of its flexible and rigid nature, the PCB can be used in any type of device and modern era electrical appliances. These are compact and lightweight, which ultimately reduces the size and weight of the final product.

There are two parts in a Rigid Flex PCB. The flexible parts are usually made of Polyimide (PI), while the rigid parts are made of FR4. There can be multiple layers of the rigid PCB board and the flexible circuit board. Commonly, there are 4, 6, and up to 24 layers of Rigid Flex PCB

A 4 layer Rigid Flex PCB means that there will be four conductive layers, which are usually two for the rigid and two for flexible layers. A 6 layer Rigid Flex PCB means it would have six conductive layers. The conductive layers are distributed among the rigid and flex parts as required. It could be two layers of rigid part and four layers of flexible part, vice versa, or any other combination. The flexible boards are glued on the rigid board to complete the whole circuitry.

If we consider the designing of Rigid Flex PCB, then you will find it a bit difficult. No doubt, the PCB is quite flexible, but the designer needs to consider the whole 3D space where it will fit easily.

What Are The Advantages Of The Rigid Flex PCB Board?

  • Space Saving
  • Shock and Vibration Resistance
  • Lightweight and Cost-effective
  • Simple and Fast Assembly Process
  • High Reliability
  • Easy Testing
Rigid-Flex PCB Panel



Rigid Flex PCB Design

When manufacturing Rigid-Flex PCBs, it is essential to begin with an accurate design. Our experienced engineers follow a set of design guidelines that help to ensure the reliability of the final product. These guidelines include:

  1. Accurately defining the flexible and rigid sections;
  2. Ensuring that all circuits are designed for correct impedance and trace width;
  3. Properly communicating layer-to-layer connections between flexible and rigid areas;
  4. Utilizing rolled copper in all flexible section areas;
  5. Defining board thickness parameters; 
  6. Conducting pre-lamination testing when necessary to ensure accuracy of fabrication.

Multilayer Rigid Flex PCB

Multilayer Rigid Flex PCBs are more complex than standard rigid flex boards, and provide the ability to perform a greater variety of functions. Electrical connections between layers can be achieved using plated-through holes, buried holes or blind holes, depending on the requirements of the project. 

When designing and manufacturing multilayer Rigid Flex PCBs, it is important to consider the suitability of each connection method for the specific application.


HDI Rigid Flex PCB

HDI (High-density interconnects) Rigid Flex PCBs are among the most flexible and Most Popular PCBs. HDI rigid flex PCBs combine flexible PCBs’ flexibility with FR-4 PCBs’ stiffness.

MorePCB has many years of experience in HDI Rigid Flex PCB manufacturing, which can meet your individual needs.

Quick Turn Rigid Flex PCB

With the continuous development and progress of PCB technology, printed circuit boards are gradually developing in the direction of light weight, thin thickness, small volume and high circuit density. The combination of flexible and rigid boards saves a lot of space in the assembly of circuit boards. The demand for rigid-flex boards from various end customers continues to increase.

MorePCB are trying the shorter production time, the faster to make prototypes and tests, then shortening the production time of high-end products.

Rigid Flex PCB Assembly

Rgid-Flex PCB Assembly Service

At MorePCB, we have a wealth of experience when it comes to assembling flexible and rigid flex PCBs. 

We provide a one-stop solution, covering fabrication, components sourcing, assembly and testing. By also addressing potential issues or problems before starting assembly,

we can ensure that our customers’ projects are completed swiftly and cost-effectively, whilst minimizing any chances of delays.

Advantages of The One-Stop PCB Manufacturer MorePCB

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