Flexible Printed Circuits

Flexible Printed Circuits

Keyflex designs and manufactures high-quality flexible printed circuits (FPCs) for a wide range of electronic applications.

  • Custom FPC design, tooling, and manufacturing services.
  • Manufactured using durable polyimide or polyester film.
  • Lightweight, thin, and highly flexible construction.
  • Designed to bend and flex without affecting performance.
  • Excellent heat dissipation for improved reliability.
  • Available as rigid-flex or flat flexible circuit designs.
  • Supports soldering of LEDs, switches, connectors, and other electronic components.
  • Custom shapes and sizes to suit specific product requirements.
  • Multi-layer circuit designs with precision etched copper tracks.
  • Available with a range of finishing options, including gold plating.
  • Ideal for compact,space-saving, and high-performance electronic devices.

    Our flexible printed circuits are engineered to provide dependable electrical connectivity where conventional rigid circuit boards may not be suitable. FPC technology allows electronic components and connections to be integrated into compact products while reducing space, weight, and wiring complexity. This makes flexible circuits an ideal choice for modern electronic devices that require efficient use of internal space and reliable performance.

    Keyflex can manufacture flexible PCB solutions according to specific electrical, mechanical, and dimensional requirements. Our FPC manufacturing process supports precise circuit patterns, custom layouts, connector configurations, and component placement. Flexible circuits can also be designed for applications where repeated bending, folding, or movement is required.

    We provide flexible circuit board solutions for a variety of industries and electronic products, including consumer electronics, industrial equipment, automotive systems, medical devices, telecommunications equipment, control panels, displays, and other compact electronic assemblies. Our custom FPC solutions can help simplify product assembly while improving overall reliability and design flexibility.

    With professional design support and advanced manufacturing capabilities, Keyflex helps customers move from initial concept and prototyping through to production. Whether you require a single-layer flexible PCB, double-sided FPC, multi-layer flexible circuit, or rigid-flex PCB assembly, we can develop a solution tailored to your application.

    Our flexible printed circuit boards offer an effective combination of flexibility, durability, precision, and space efficiency, making them suitable for demanding electronic applications where performance and reliability are essential.

Advantages of Flexible Circuit Design

  • Reduce messy, time consuming wire harnesses

  • Space and weight reduction coupled to robust connections and fast assembly

  • Excellent performance in high vibration applications- flexibility reduces stress on solder joints

  • Polyamide covering protects circuits in harsh environments

  • Excellent performance in high speed signal transmission applications

  • Uniform spacings between conductors and ground helps to control impedance and reduce crosstalk

Common questions regarding Flexible Circuit design?

What is the minimum bend radius that I can work with?

A good rule of thumb to go by is a minimum of 6x the circuit thickness with single layer flex circuit the best choice for flexible areas. Typically, a layer is 0.15mm thick

  • Single-layer: 6 × circuit thickness (minimum)

  • Double-layer: 12 × circuit thickness (minimum)

  • Multilayer: 24 × circuit thickness (minimum)

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