The mechanical and electrical needs of a project determine the type of flexible circuit used.

When selecting a flex, weigh the advantages of the circuit against the total installed cost, including inspection, interconnection, tooling and testing. PFC can help you make an informed decision.


  • Single-layer flexible circuits have one layer of metal on a dielectric. This is the lowest cost flex circuit and is the thinnest, most flexible solution.

single-sided labeled cross-section


  • Double-layer flexible circuits have two layers of metal with a dielectric. A double-layer circuit improves layout density and increases the input/output signal count.



  • Multi-layer flexible circuits have several layers that are registered to each other and are separated by a cured layer of adhesive during lamination, with interlayer connections via plated-thru holes. Multi-layer is often used in high-speed, impedance controlled requirements and can assist with EMI.



  • Rigid-flex is the combination of flex circuit and printed circuit board (PCB).

rigid flex circuit cross section