2022-11-11 BEST

Flexible Circuit Production Capability

We list our usual material and technical specification of Flexible Circuits & flex printed circuits (FPC) in the below table. Also, you can view the facility tolerance of circuits.

If you would like some special raw material for Flex Circuits, tighter tolerance or other requirements of flexible PCB (flex circuit board), you can Contact our staff directly, we are at your service at any time.

List of Flexible Circuit Manufacturing Capacity

Parameter (mm)

Polyimide (PI)


Laminate Thickness 0.025 / 0.050/ 0.125/ 0.175 0.025 / 0.050/ 0.075
Copper Foil 0.012,0.018,0.035,0.070 0.035,0.070
Min Pattern width/Space 0.075(3 mil) 0.075(3 mil)
Min. Drilled Hole Size Non-Plated Thru 0.25+/-0.05mm
Plated Thru


Outlines Dimension +/- 0.05mm +/- 0.05mm

Peeling Strength(180°Direction)

>1.2kgf / cm >1.2kgf / cm
Solder Hent Resistance 280℃ / 10secs 280℃ / 10secs
Surface Treatment Ni/Au 2~5μm 2~5μm
Au(Electro/Immersion) 0.03 ~0.1μm 0.03 ~0.1μm
Sn/Pb (Lead Free) 3~ 20μm 3~ 20μm
Sn-Cu Plating (Lead Free) 3~ 5μm 3~ 5μm
Tin Plating (Pure Sn) 5 ~ 8μm 5 ~ 8μm
Bending flexibility Meet to IPC Criterion
Chemical Resistance Meet to IPC Criterion