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Flexible PCBs

What is Flexible PCB?

Flexible circuit boards, also known as flex circuit, flex pcbs, or FPC, are designed for saving room and improving the flexibility to meet a smaller and higher density mounting design. It also helps to reduce the assembly process and enhance reliability. In brief, FPC is the only solution to ensure the miniaturization and moving of electronic products.

The Benefits of Flexible PCBs

Flexible printed circuit boards offer many potential benefits so that flexible PCBs are now being used widely to replace traditional FR4 PCB in various different applications.

  • Reduce weight and space: Thickness can be as thin as .004 inches (.10mm) in total.

  • Reduce assembly costs: Flex circuits can be tested prior to assembly of components.

  • High tensile strength: can be significantly warped/deformed without breakage.

  • High Heat Dissipation: Owing to the compact designs and denser device populations, shorter thermal paths are created. This helps dissipate the heat faster than a rigid circuit.

  • Streamlined Designs Made Possible: Flexible circuit board technologies have helped improve circuit geometries. The components can be easily surface mounted onto the boards, thus simplifying the overall design.

Capabilities in Manufacturing Flexible PCB

ProjectsContentTechnological Capability
Cutting MaterialLayer1-8L
Min. Finished PCB size480mm*380mm
Max. Finished PCB size5mm*8mm
Thickness0.05mm - 0.3mm
Base MaterialCopper Thickness1/3oz, 1/2oz, 1oz, 2oz
PI Film0.5mil, 0.7mil, 0.8mil, 1mil, 2mil
DrillingMin. Via Hole (Laser  Drilling)0.08mm
Min. Blind Hole (Laser Drilling)0.05mm
Machine Drilling0.15mm - 6.30mm
SoldermaskMin. Bridge Width0.1mm
Min. Spacing Between Pad to Opening0.05mm
Min. Opening0.3mm
SilkscreenMin. Height0.8mm
Min. Width0.8mm
Surface FinishPlating Gold0.025 - 0.2um
Immersion Gold0.025 - 0.125um
Plating Tin3 - 10um
Immersion Tin0.6 - 1.2um
OSP0.4 - 0.8um

Applications for Flex Printed Circuit Boards

The continuous miniaturization of devices has driven printed circuit boards to become smaller and denser and require more capabilities. Applications we supply mini flexible PCBs include:

  • Consumer Electronics

  • Medical devices - wearables

  • Industrial sensors

  • Motion systems

  • Semiconductor test and manufacturing devices

  • Semiconductor packaging

  • Fuel pumps



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