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What is Flexible PCB?

A Flexible PCB, or flex printed circuit board, is a type of PCB designed to bend and flex to fit into compact spaces. Made from flexible materials like polyimide, Flex PCBs are used in applications where space is limited and flexibility is essential, such as in wearable devices, smartphones and medical equipment. They offer advantages in terms of reliability, weight reduction, and design versatility. JLCPCB utilizes cutting-edge production technology to deliver premium Flexible PCBs that meet the demands of complex, lightweight and compact applications. Our Flex PCBs offer superior performance, improved thermal management, and seamless integration possibilities.


The Benefits of JLCPCB Flexible PCB

  • icon Superior Performance & Precision

    10.8μm advanced lithography ensures perfect hole alignment, eliminating misalignment issues.

  • icon Extreme Durability

    Withstands up to 280°C without breaking. Uses 100% adhesive-free base material for enhanced reliability.

  • icon Unlimited Design Flexibility

    Intricate cuts achievable with P-second UV laser shaping, offering vast design possibilities and cost-effectiveness in manufacturing.

FAQs

  • What materials are used in Flex PCBs?

    Flex PCBs typically use copper for the conductive layers and polyimide for the insulating material. Adhesives and stiffeners are also used to bond and support the layers.

  • What is a typical thickness of Flex PCB?

    The typical thickness for a 2-Layer Flex PCB can vary from 0.11mm to 0.2mm.

  • How do Flex PCBs differ from rigid PCBs?

    Unlike rigid PCBs, Flex PCBs can bend and fold, allowing them to fit into tight spaces and conform to complex shapes, making them suitable for dynamic and compact designs.

  • Can Flex PCBs handle high temperatures?

    Yes, Flex PCBs are designed to withstand a wide range of temperatures, making them suitable for automotive, aerospace, and industrial applications where thermal management is important.

  • What are the design considerations for Flex PCBs?

    When designing Flex PCBs, it’s important to consider factors like bend radius, material selection, and layer stackup to ensure optimal performance and longevity.

  • Can Flex PCBs be customized for specific applications?

    Yes, Flex PCBs can be fully customized in terms of size, shape, layer count, and materials to meet the specific requirements of your application.

Standard 2-Layer Flexible PCB Stackup

Standard 0.11mm 2-layer Flex PCB features a carefully structured stackup for optimal performance in compact and flexible applications. The stackup includes two 12μm copper layers separated by a polyimide dielectric with a dielectric constant (Dk) of 3.3 and 2.9, offering excellent electrical insulation and flexibility. Each copper layer is bonded with 15μm adhesive, ensuring strong layer integrity. The total thickness of 104μm provides a balance between flexibility and durability, making it suitable for intricate designs and dynamic environments.

Common Applications of Flexible PCBs

  • Wearable Technology: Flexible PCBs are ideal for wearable devices such as fitness trackers, smartwatches, and medical monitors. Their flexibility allows them to conform to the shape of the human body, providing comfort and durability in dynamic environments.

  • Consumer Electronics: Flexible PCBs are widely used in smartphones, tablets, laptops, and cameras. They help reduce the size and weight of these devices while allowing for more compact and complex internal designs.

  • Automotive Systems: In the automotive industry, Flexible PCBs are used in dashboards, control systems, sensors, and LED lighting. Their ability to withstand vibrations, extreme temperatures, and harsh conditions makes them suitable for automotive applications.

  • Medical Devices: Flexible PCBs enable smaller, more comfortable, and biocompatible designs in implantable devices, diagnostic equipment, and medical sensors, improving patient care and outcomes.

Quality, Speed and Affordability. The Flex PCB Experts - JLCPCB

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JLCPCB FPC Capabilities

  • Process Innovation: We support complex shapes and panelization services, provide professional FPC layout software and offer expert design guidance services.

  • Stiffener Process: We support PI stiffener, steel stiffener, FR4 stiffener, adhesive backing and electromagnetic film processes. 0.4-1.6mm thick FR4 upgraded to hot-press process, ensuring SMT high-temperature resistance without detachment.

  • Precision Circuits : Minimum line width and spacing support 2/2mil. We use self-developed CAM software. With the help of high-precision lithography machine technology at the circuit board level, we easily handle 0.05mm wide circuits.