Rigid-Flex Circuit Boards


Rigid Flex Circuits, which marries the best of both worlds, the rigid PCB and the Flex Circuit, has gained popularity for the past decade, because of its inherent advantages in packaging, reliability and overall cost savings.

Today's rigid flex circuits range from 4 Layers to 20+ Layers, with some of the most advanced technology.  Industries from Military, Aerospace, Medical, Industrial and Consumer have embraced this technology as a proven, reliable part of the entire electronic assembly package.

Rigid flex circuits are used to accommodate the entire conductor pattern of an electric circuit within one component. A Rigid-flex circuit board can consist of flexible circuit(s), which is then bonded to a stiffening material in specific location(s) with plated through holes. These provide an option when flexibility is needed in a portion of the circuit, while still using a rigid portion in the majority of the design.

Rigid flex circuits combine the best of both rigid boards and flexible circuits integrated together into one circuit.  The two-in-one circuit is interconnected through plated thru holes. Rigid flex circuits provide higher component density and better quality control. Designs are rigid where extra support is needed and flexible around corners and areas requiring extra space.  

 There are nearly limitless design when combining rigid boards with flexible circuits.

Applications

Rigid-flex circuit boards can be used in:

  • Extremely complex configurations
  • Controlled Impedance
  • Reduced interconnections

Features

Rigid-flex PCBs feature:

  • Extremely complex configurations
  • Controlled Impedance
  • Reduced interconnections

Additional Resources

Free Rigid-Flex Design Guide

Flexible PCBs have gained popularity over the past decade because of their inherent advantages in packing, reliability and overall cost saving. Industries from Military, Aerospace, Medical, Industrial and Consumer have embraced this technology as a proven, reliable part of the entire electronic assembly package.

Rigid-Flex in particular offers the designer opportunities to conform to mechanical restrictions of an existing system. It solves part of the Form Factor and Fit, enabling the designer to meet the function of the overall design and /or retrofit in existing designs. Rigid-flex construction allows for use of many variables while meeting the needs for signal processing and predictable values for impedance, mechanical configuration, cost, and reliability. 

Download brief guide to designing with rigid-flex.