Ultra-thin Double-sided FPC "NITOFLEX®"

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

Stiffness Properties

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.