Kicad Flex PCBs for Streamlined PCB Design Process in the Modern Age

Kicad Flex PCB

Kicad Flex PCB is a revolutionary new technology that has recently emerged in the printed circuit board world. This technology is becoming increasingly popular among electronics designers, offering several advantages over rigid PCBs. Artist 3D’s flexible boards offer designers a range of advantages over traditional rigid PCBs. Such include increased flexibility, weight savings, and improved performance in extreme temperatures. Additionally, Kicad Flex PCB offers designers the ability to create complex shapes, which is impossible with traditional rigid PCBs. This article will examine this technology, its benefits, and its potential applications. We’ll also discuss the challenges associated with using Artist 3D’s Kicad Flex PCBs, the possible solutions to these issues, and how they can help create innovative and reliable circuit boards.

What is kicad flex PCB?

Kicad Flex PCB is a printed circuit board (PCB) type designed using Kicad, a free and open-source electronic design automation (EDA) software suite. Kicad Flex PCB allows you to create a flexible circuit board that can be helpful in various applications.

Features of Kicad Flex PCB

Here are some features of Kicad Flex PCB:

  1. Flexible substrate material. Kicad Flex PCBs have a flexible substrate material, such as polyimide, which allows them to bend or flexed in various applications.
  2. Design flexibility. The Kicad Flex PCB layout editor (pcbnew) allows users to design flexible PCBs with a variety of layout options, including the ability to specify the thickness and material of the flex PCB, as well as the location of any stiffeners or connectors that may be necessary.
  3. Routing tools. Kicad includes a built-in auto-router and manual routing tools that can help route the traces on a flex PCB layout.
  4. Component placement. Kicad allows users to place components on a flex PCB layout using various tools, including a component library and 3D visualization tools.
  5. Design rule checking. Kicad includes design rule checking (DRC) tools that can help ensure that a flex PCB layout adheres to industry standards and guidelines.
  6. Export options. Kicad allows users to export flex PCB layouts in various formats, including Gerber files for manufacturing and 3D models for visualization and analysis.
  7. Cross-platform compatibility. Kicad is available for Windows, Linux, and macOS, which allows users to design flex PCBs on a variety of operating systems.
  8. Open-source. Kicad is an open-source EDA software suite, which means that users have access to the source code and can contribute to the development of the software.

Design considerations of Kicad Flex PCB

When designing a Kicad Flex PCB, it is essential to consider the following factors:

  1. Material: The material used to construct the Kicad Flex PCB needs to be strong enough to support the components and withstand repeated flexing without breaking. Polyimide is the most commonly used material for this type of PCB, as it is flexible and resistant to static electricity.
  2. Trace Width: The trace width of the Kicad Flex PCB must be large enough to carry the required current but not so large that it is too bulky or heavy. The trace width should also remain as small as possible to reduce the overall size and weight of the board.
  3. Trace Spacing: The trace spacing of the Kicad Flex PCB must be wide enough to prevent short circuits between the traces. The trace spacing should also be small enough to minimize the size and weight of the board.
  4. Components: The components used in a Kicad Flex PCB must be specifically for this type of board. Please choose the parts carefully to ensure they are compatible with the material and trace the board’s width.
  5. Assembly: Assembling a Kicad Flex PCB can be more challenging than other types of PCBs due to its flexibility. Special care ensures that all components are securely soldered and that the board is not damaged during the assembly process.

Applications of Kicad Flex PCBs

Kapton FPC

Some possible applications of Kicad Flex PCBs include the following:

  1. Portable or wearable electronics: You can use Flex PCBs in mobile or wearable electronics, such as smartwatches, fitness trackers, and headphones. This is because they can bend or flex to fit the contours of the device.
  2. Automotive and aerospace applications: Flex PCBs are helpful in various automotive and aerospace applications, such as in-vehicle infotainment systems and aircraft instrumentation. They can withstand the harsh environments and vibrations that these applications often encounter.
  3. Medical devices: Flex PCBs, such as wearable monitoring and implantable devices, are helpful in medical devices. They can be thin and flexible enough for anybody to comfortably wear or implant them in the body.
  4. Industrial and consumer products: Flex PCBs are applicable in various consumer and industrial products, such as appliances, consumer electronics, and office equipment. This is because they can fit into tight spaces or take advantage of the flexibility of the substrate material.
  5. Military and defense applications: Flex PCBs are helpful in military and defense applications, such as radar systems and communication equipment because they can withstand the rugged environments and high-stress conditions that these applications often encounter.

Possible Challenges When Working with Kicad Flex PCB

Here are some common challenges that designers may face when working with Kicad Flex PCBs:

  1. Design Complexity: Kicad Flex PCBs require a more complex design than traditional PCBs. It takes more time to lay the components and connections properly on the board, and it may need more experience to do it right.
  2. Increased Costs: Due to their design complexity and the fact that they are often custom-made, Kicad Flex PCBs are more expensive than traditional PCBs . This feature can be a challenge for designers who are on a budget.
  3. Limited Manufacturing Options: Kicad Flex PCBs are less widely manufactured than other PCBs. This point means that designers may have a limited selection of manufacturers and pay more for manufacturing.
  4. Component Accessibility: Working with Kicad Flex PCBs can be difficult because components are often recessed or hidden under other layers. This can make it hard to access and replace parts, challenging designers who need to make quick changes.
  5. Solderability Issues: Kicad Flex PCBs are more prone to solderability issues than traditional PCBs. The complexity of their design and the fact that they are often made with thinner layers can be a major source of these issues. This aspect can be a challenge for designers who must ensure that the boards are correctly soldered and free from defects.

Current Trends in Kicad Flex PCB


Recently, there have been some evident improvements and changes in Kicad Flex PCBs. The following are a few of the most popular of these trends:

  1. Automation: Automation is becoming a popular trend in Kicad Flex PCB design. It allows designers to streamline the production process and reduce costs. Automation also enables faster turnaround times and improved accuracy.
  2. Smart Design: Smart Design is becoming increasingly popular with Kicad Flex PCB designers. Smart Design allows designers to create more efficient layouts with fewer layers and components, saving time and money.
  3. Advanced Simulation: Simulation is becoming more and more critical in Kicad Flex PCB design, allowing designers to analyze and test their designs before manufacturing. This advancement helps reduce the risk of design errors and costly re-designs.
  4. Embedded Components: Embedded components are becoming increasingly popular in Kicad Flex PCB design. Embedded features allow designers to add functionality to their designs without adding additional elements or layers. This aspect helps reduce manufacturing costs and design complexity.
  5. Improved Usability: Kicad Flex PCB designers are increasingly focusing on improving the usability of their designs. This aspect includes adding user-friendly features such as drag-and-drop components and an intuitive user interface. This feature helps make the design process faster and easier.

What to Expect from Kicad Flex PCB in Future

Coverlay PCB

Here are a few things that users might expect from Kicad Flex PCB in the future:

  1. Improved layout and design tools: Kicad will likely continue to improve and refine its layout and design tools for flexible PCBs, including new features and enhancements to existing tools.
  2. Enhanced manufacturing support: Kicad may continue to support new manufacturing processes and technologies, such as advanced materials and 3D printing. This enables the production of more complex and advanced flex PCBs.
  3. Increased integration with other EDA tools: Kicad may continue to integrate with different EDA tools like simulation and analysis software. Such allows a more seamless design process for flex PCBs.
  4. Greater community involvement: As an open-source software suite, Kicad relies on the contributions and feedback of its user community. The Kicad Flex PCB feature will likely continue to evolve and improve with the input and support of the community.
  5. Expansion into new markets and applications: Kicad Flex PCB may continue to expand into new markets and applications. The demand for flexible PCBs grows and new technologies emerge.


From the above details, Kicad Flex PCBs from Artist 3D are an excellent option for designers who need a highly customizable and versatile PCB. The PCBs offer great flexibility and durability. However, designers should be aware of the potential challenges of working with this type of board. With careful planning and attention to detail, designers can easily overcome these challenges and create a successful flex PCB. In addition, the advent of new features and the availability of more affordable solutions makes these boards likely to become a staple in the electronics industry. Their incorporation in designing could lead to the creation of even more complex and intricate designs. Such will allow engineers to create custom circuits for a variety of applications.

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