Flexible PCB

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What is Flexible PCB?

A Flex Circuit or Flex PCB is a patterned arrangement of printed circuitry and components that utilizes flexible based material with or without flexible coverlay.

These flexible electronic assemblies may be fabricated using the same components used for rigid printed circuit boards, but allowing the board to conform to a desired shape (flex) during its application.

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Flexible PCB / FPCB Applications

FPCBs are used widely in everyday
technology and electronics in addition
to high-end, complex completed components.

Two of the most prominent examples
of flexible  circuit usage is in modern
portable electronics, devices,
hard disk drives and desktop printers.

hard disk fpcb

Flexible circuit boards other applications

flexible pcb application gaming

Flexible circuits are also used extensively in other applications and industries including:

  • Communications
  • Consumer Electronics
  • Automotive
  • Medical Industrial
  • Aerospace
  • Military Transportation

Stack up of Flexible PCB

Single Sided FPC

single layer fpcb

single sided fpc stackup

Single Sided FPC with double access

 

2layer flexible pcb

single-sided fpc with double access

Double sided FPC

 

double sided flexible pcb

Multilayer FPC

multi layer fpc

multilayer fpc stackup

Rigid Flex PCB

rigid flex pcb

rigid flex pcb stack up

Capability of Flexible printed circuits

ItemCapabilities
Layers1-8 Layers
Min.Line Width0.05mm (2 mil)
Min.Line Space0.05mm (2 mil)
Min.Annular ring0.125mm (5 mil)
Min. Via0.1mm (4 mil)
Max.Size250mm X 800mm
MaterialPolymide,High Tg Polymide
Material thicknessStart at 25um Plus copper
Copper thickness0.5 - 4 OZ( 18um - 140um)
Drill to Copper Out. Layer0.2mm (8 mil)
Drill to Copper Inn. Layer0.254mm (10 mil)
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