Design Rules: Flex Printed Circuit Boards

in addition to the Design Rules for Multilayer PCBs

Measurement  Description Value [┬Ám]
 Std. / Advanced / Limit  
 
Designrules
 
  Pattern
  
 
  Conductors evenly distributed
  Conductors parallel to outline
  Conductors TOP and BOT staggered

 Designrules
 
  Clearance Copper-Outline
 
  500 / 300 / 100

 Designrules
 
  Increased Flexibility of Ground Planes





 
 
  Pitch      1500 / 1000 / 800
  Width       500 / 400 / 300
  Gap       1000 / 600 / 500
 Designrules  
  Coverlay Clearance
 
  milled/drilled
  500 / 400 / 300
  lasered
  300 / 200 / 100
  photosensitive
  100 / 75 / 50

 Designrules
 
  Long Flex

  Length
  Width

  Layers

  Conductor Width, Conductor Space

  Via Diameter
  Annular Ring

  Clearance Copper-Outline

  Length Rigid Area

  Distance of Via Position to Ends of
  Long Flex

 
  

  < 5 m
  < 225 mm

  1 ... 4

  500 / 250 / 200

  500 / 300 / 200
  400 / 300 / 200

  500 / 300 / 200

  < 75 mm

  < 500 mm
 Designrules  
  Bending Radius
 
  > 1 ... 5 mm
  (Depending on construction)