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Ultra-thin Double-sided FPC

A circuit board which reduces the bias force with a thin base Pl to combine improved flexibility with double-sided micro line processing.

Features

  • Low repulsion due to thin base Pl
  • Higher density with laser Via
  • Finer pitch due to thin copper foil

Structure

Properties

Stiffness Properties

Connection Reliability

Connection Reliability (Oil Dip Test)

Design Guide

Type Base material Min．product total thickness Min．
TH diameter		 Min．
Land diameter		 Min．
L/S
Cu thickness
（including PTH）		 Pl thickness Front side Back side
Normal Double-sided FPC 18 15～25 60.5 98.5 75 250 50/50
Ultra-thin Double-sided FPC 12 15～25 54.5 86.5 50 200 40/40

[Remarks]

  • *The above data are results of experiment at Nitto Denko and are not applicable as standard values.
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