Flex circuits is a pattern of conductors created on a bendable film that acts as an insulating (dielectric) base material. The top is coated with a dielectric cover layer. FPC can be developed using polyester or polyimide (Kapton) as the base material depending on your interface requirements. Structure can be rigid or flexible to reduce interconnection and incorporate tails directly into the circuit. FPC can be designed from simple single layer copper flex on polyester to complex double sided on polyimide, and even intricate multi-layer composition.

Benefits of flex circuits compared to traditional cabling and rigid boards include:

• Reduced wiring errors
• Elimination of mechanical connectors
• Unparalleled design flexibility
• Higher circuit density
• More robust operating temperature range
• Stronger signal quality
• Improved reliability and impedance control
• Size and weight reduction