RUSH PCB Inc Flexible Circuit Boards


Flex PCBs (Flexible Printed Circuit Boards) are printed circuit boards that are bendable, either bent once as they are being installed like the ones in a miniature camera, or bent multiple times (even continuously) like the ones in an ink jet printer.

Flex PCBs can be single sided, double sided, or multi-layered.They can have stiffeners to provide areas of non-flexing, or they can be part of a Ridged-Flexible assembly to allow a Rigid PCB to be bent on assembly.

Flexible PCB Uses


Reducing both labour cost and assembly size, Flexible PCBs are used in more and more electronic assemblies. Some of the uses for Flexible PCBs:

  • Automobiles
  • Cameras
  • Cell Phones
  • Military Electronics
  • Avionic Electronics
  • Computers
  • Tablets


Flex PCB Advantages


Flexible Printed Circuit Boards have advantages over rigid PCBs, ribbon cable, and discrete wiring with its ability to:

  • Reduce overall package size/weight
  • Reduce assembly errors
  • Increase reliability
  • Increase control of impedance/inductance
  • Improve heat dissipation
  • Allow for a 3-dimensional packaging scheme
  • Improve the appearance of the package

Flex PCB Concerns


Where components are attached or where the flexible circuit board is to be bent as it attaches to non-flexing circuits, stiffeners are included.This prevents damage to both the connections and the Flex PCB.

Flexible PCBs, by their nature, are made to odd shapes; they aren’t a convenient rectangle. After the Flex PCB is manufactured,it has to be routed, or skived, to shape it to fit. To make sure the edges of the circuit traces are not going to be damaged in the process of the routing, care must be taken in the layout and design stages to keep the circuit traces back from the edge.

When there will be continuous or dynamic flexing of the circuit material, special considerations are needed. On multi-layered Flex PCBs, this includes taking into account the number of layers while making sure the conductors will not be fatigued while the PCB is flexed.

RUSH PCB Inc


The professional and high quality Flexible Printed Circuit Boards from RUSH PCB Inc insures that your printed circuit boards follow the strictest standards.

For more information on Flex PCBs, contact us at sales@rushpcb.com or call 408-496-6013.

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