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

  • 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

  • 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.

double-sided-labeled-cross-section3

Multi-layer

  • 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.

multi-layer-labeled-cross-section

 Rigid-flex

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

rigid flex circuit cross section

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