Rigid Flex Circuit Boards / Rigid Flex PCB

Rigid Flex Circuit Boards / Rigid Flex PCB

Product/Tech Description
  • 2
  • December 20, 2023

Rigid Flexible Circuit Boards / Rigid Flex PCB:

Rigid flex circuit boards / rigid flex PCB represent a sophisticated blend of both rigid and flexible circuit board technologies, creating a versatile and durable electronic component. This hybrid approach combines the best of both worlds – the structural integrity of rigid boards with the adaptability of flexible circuits.

At the heart of rigid flex PCB design are the flexible layers, like those found in traditional flex PCBs. These layers are typically made from materials like polyimide or similar polymers, which offer excellent electrical insulation and heat resistance while maintaining their flexibility. This flexibility is a critical feature of rigid flex printed circuit boards, allowing these PCBs to be bent or folded during installation or use, making them ideal for complex or compact electronic assemblies.

In contrast to the flexible areas, the rigid sections of this design are typically composed of standard FR4 or other rigid materials. FR4 is a widely used material in the production of electronic circuit boards, known for its high electrical insulation and satisfactory mechanical strength. The rigid sections provide much-needed support and stability to the overall structure of the rigid flex circuit board. They are particularly useful in areas where electronic components need to be mounted securely, ensuring that the connections remain stable and reliable even under stress.

The fusion of these two technologies offers several advantages. Firstly, it allows for a more efficient use of space within electronic devices. By bending or folding the flexible sections of rigid flex circuit boards, designers can fit more components into smaller areas, an essential consideration in modern, compact electronic devices. Additionally, the reduced number of connectors and interconnections in rigid flex PCBs leads to improved reliability and performance, as there are fewer potential points of failure.

Moreover, rigid flex PCB design provide enhanced durability. The flexible sections of a rigid flex circuit board absorb and dissipate mechanical stress, reducing the risk of damage during use or installation. This makes them particularly suitable for applications where the PCB may be subject to movement or bending, such as in wearable technology or in devices that are frequently handled or moved.

Rigid flex circuit boards are a vital innovation in the field of electronic components. They offer the stability of rigid boards and the flexibility of flex circuits, making them highly suitable for a wide range of applications. Their ability to conform to different shapes and their resilience against mechanical stress make rigid flex PCB design an increasingly popular choice in the ever-evolving landscape of electronic design and manufacture.

Contact us with any questions on rigid flex PCB design and our capabilities as a rigid flex PCB manufacturer. We look forward to hearing from you and your design needs. 

For technical information on PICA’s Rigid Flex Printed Circuit Board capabilities, click the button below. 


Optimized Space Utilization: Rigid flex circuit boards are uniquely suited to fit into compact and irregularly shaped spaces, making them ideal for electronic devices where space is at a premium and contributing to the miniaturization of electronic devices.

Enhanced Reliability: The integration of rigid and flexible circuits into a single unit eliminates the need for connectors and interconnecting cables, which are common in traditional PCB designs. It lowers the risk of connection failures, enhancing the overall reliability of electronic systems, especially in dynamic applications where movement can be a factor.

Superior Durability: Rigid flex circuit boards combine the resilience of rigid PCBs with the flexibility of flex circuits, resulting in a product that excels in resisting vibrations, shocks, and mechanical stress.

Weight Reduction: These circuits are inherently lighter than traditional rigid PCBs due to the use of flexible materials and the elimination of bulky connectors and cables.

Design Versatility: Rigid flex circuit boards offer an unparalleled level of design freedom, far surpassing that of standard rigid boards. They support complex three-dimensional configurations, bending, and folding, which opens new possibilities for innovative, space-efficient designs.


Consumer Electronics: Rigid flex PCB design is a perfect match for consumer electronics like smartphones, tablets, and wearable devices. Their ability to bend and fold allows for more creative and compact designs, which is crucial in devices where space is limited, and weight reduction is essential.

Medical Devices: In the medical field, rigid flex PCB is ideal for applications such as pacemakers, hearing aids, and advanced medical implants. Their flexibility is key for devices that require conforming to the human body’s contours, while their reliability and biocompatibility make them safe for both internal and external medical applications. They are also used in various diagnostic equipment, where their space-efficient designs enable more portable and user-friendly devices.

Automotive: In automotive applications, the rigid flex PCB is used in control systems, lighting, and entertainment systems. Their ability to conform to the irregular shapes within a vehicle, combined with their durability against vibrations and temperature variations, makes them especially suitable for modern automotive designs that require both aesthetic appeal and functional resilience.

Industrial Equipment: Rigid flex PCB is well-suited for industrial control systems, robotics, and sensors. Their ruggedness allows them to withstand harsh industrial environments, including exposure to chemicals, extreme temperatures, and mechanical stress.

Defense Aerospace: In the defense and aerospace sectors, the rigid flex PCB design utilized in satellites, missiles, and other advanced defense systems. Their ability to endure extreme environmental conditions, including intense vibrations and temperature extremes, is crucial in these applications. The lightweight nature of rigid-flex circuit board contributes to the overall efficiency and performance of aerospace systems, where weight is a critical factor.

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