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Standard Flex Materials:
Base Copper: | 1/3 oz. - .00047 in. (.012mm)--rarely used |
1/2 oz. - .0007 in. (.018mm) | |
1 oz. - .0014 in. (.036mm) | |
2 oz. - .0028 in. (.071mm) | |
Solder Mask: | Polyimide Coverlay: 0.5 mil to 5 mils Kapton (.012mm - .127mm) |
with 0.5 to 2 mil Adhesive (.012mm - .051mm) | |
LPI and LDI Flexible Soldermasks |
Specification of FPC Manufacturing
Material | FR4,Polyimide / Polyester |
Counts | Flex: 1~8L; Rigid-Flex: 2~8L |
Board Thickness | Min.0.05mm ; Max. 0.3mm |
Copper Thickness | 1/3 oz-2 oz |
Holes Location Tolerance | ±0.05mm |
Coverlay Drill Size (Min) | 0.6mm |
CNC Drill Size (Max) | 6.5mm |
CNC Drill Size (Min) | Flex: 0.15mm |
Min Line Width / Spacing | 0.1/0.1mm |
Min Pad Size | φ0.2mm |
Etch Tolerance | Finished line width tolerance ±20% |
Hole to Coverlay Opening Windows (Min) | 0.15mm |
Surface Finish | Plating Ni / Au ; Chemical Ni / Au ; OSP; Immersion Silver/Gold, OSP, Gold plating |
Coverlay Registration Tolerance | ±0.15mm |
Solder Mask Registration Tolerance | ±0.2mm |
Min. Solder Mask Dam | 0.1mm |
Stiffener, Adhesive, Glue paper | ±0.30mm |