Flexible PCBs

Product Information “Flexible PCBs”

Flexible printed circuit boards are now in use throughout the electronics industry. The circuit board is generally installed bent, folded or twisted. Flexible printed circuit boards are primarily used to replace wiring and connectors, and to create configurations and complex geometries that would be impracticable with rigid printed circuit boards.

AT&S offers the following product range:

  • Flexible printed circuit boards based on polyimide, from single-sided to multilayer flex
  • For use in dynamic or static applications
  • With SMD population and underfill

Technology Sheet

CapabilitiesStandard ProductionAdvanced Production
Layer Count / TechnologySingle Sided - 2 layer PCB'sSingle Sided - 6 Layer
PCB Thickness Range75µm - 800µm (including Stiffner)50µm - 1200µm (including Stiffner)
Materials Polyimide Polyimide
Thinnest Core50µm without Adhesive25µm without Adhesive
Copper Thickness9µm / 12µm / 18µm / 35µm9µm / 12µm / 18µm / 35µm
Copper Plating Holes20µm (25µm)13µm / 20µm / 25µm
Min. Line / Spacing125µm / 125µm65µm / 65µm (LDI)
Soldermask Registration+/- 100µm (Photoimageable)+/- 50µm (Photoimageable)
Min. Soldermask Dam100µm65µm
Soldermask ColorAmber (green)Amber (green)
Cover Layer PolyimideLaser cutting / punching / drilledLaser cutting / punching / drilled
Production Panel609.6 mm x 457.2 mm
250 mm x (250 - 410 mm)
609.6 mm x 457.2 mm
250 mm x (250 - 410 mm)
Min. Annular Ring150µm150µm
Smallest Drill0.28 mm0.2 mm
Smallest Routing Bit0.8 mm0.8 mm
SurfacesOSP / Immersion Tin
Immersion Ni/Au
Plated Ni/Au
OSP / Immersion Tin
Immersion Ni/Au
Plated Ni/Au
ID PrintWhiteWhite
Adhesive TapeYesYes
SMT ServiceYesYes
Stiffner MaterialFR4 / Steel / AluminiumFR4 / Steel / Aluminium