What Are Flexible Circuit Boards Actually Made Of?

Have you ever actually held a flexible circuit board in your hands? It may feel a little like metal, but it’s so lightweight and flexible that you may be unsure exactly what it is comprised of. Flexible circuit boards are designed using highly advanced materials, which is why they can be so powerful and yet so thin and flexible at the same time.

Not every flex circuit board is made of the same materials, but most include strips of copper, which is highly conductive. The copper is covered in a dielectric material that insulates the charge. This material is typically a polyimide. Polyimides are great insulators, which is why the circuit board can bend while still being functional. Polyimides can also stand high temperatures, which makes them an excellent option within heat-filled electronics.

At GC Aero, we can advise customers on the best components and materials to use in their flexible circuit boards so that their products operate at peak efficiency. Contact us today to schedule a consultation.