FPC process capability

project	General process capability	Special process capability
Number of layers	1-6 layers of soft boards, 4 layers of soft hard bonding	8-layer soft board combined with 6-layer soft and hard
Complete the bare board thickness	0.06mm-0.6mm	0.8mm
Complete the bare plate thickness tolerance	/-0.03mm	/-0.02mm
Minimum borehole diameter	0.2mm	0.15mm
Minimum line width and line spacing	0.055/0.055mm	0.045mm/0.045mm
Appearance tolerance	/-0.1 mm	/-0.05mm
Cover film adhesion tolerance	/-0.2mm	/-0.1 mm
Reinforcement and fitting tolerance	/-0.25mm	/-0.1 mm
Text screen printing tolerance	/-0.2mm	/-0.15mm
Nickel deposit thickness	2-3um (80-120U ")	Thickest 5u“
Gold deposit thickness	0.03-0.075um (1-3u ")	Thickest 0.125u“

(For details, please refer to the process force summary table in the engineering process documents.) If the tolerance requirements in the external dimensions are: ordinary steel molds can be selected for the shape to reach 0.01mm, and precision molds can be opened at the insertion and extraction of fingers to reach 0.05mm.