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project conventional special remark
Layers 1-6 layers 1-8 layers 　
Puzzle size 250*400mm max 250*500mm max 　
line Minimum line width 0.05mm 0.03mm 　
Minimum line spacing 0.05mm 0.045mm 　
hole Min drilling 0.20mm 0.075mm 　
Dimensional tolerance Outer dimensions ±0.10mm ±0.05mm 　
Finger margin ±0.10mm ±0.075mm
Surface treatment Gold-plated Au 0.025-0.075um
( 1-3u〞）		 0.025-1.25um
( 1-50u〞）		 　
Ni 1.5-5um
( 60-200u〞）		 1.5-7um
( 60-280u〞）		 　
Immersion Gold Au 0.025-0.075um
( 1-3u〞）		 0.025-1.25um
( 1-50u〞）		 　
Ni 0.025-0.075um
( 1-3u〞）		 1.5-7um
( 60-280u〞）		 　
Panel spacing
（Continuous)		 Punching 　 0.80mm 0.70mm 　
Slot 　 2.0mm 1.0mm
Reinforced fit tolerance ±0.20mm ±0.10mm 　
Solder mask alignment accuracy ±0.10mm ±0.05mm 　
Differential impedance ±10 % ±8% 　
Characteristic impedance ±10 % ±8% 　
Ground resistance ≦10Ω ≦3Ω ≦1Ω
Require customers to cooperate with special design + material selection
Internal resistance of the line Decided by design ≦100 mΩ
（Fast charge）		 R=ρL/S（Rresistance、SCross-sectional area、Llength、ρResistivity）
（Resistivity of copperρ=0.0175）　
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TEL：0755-29906588　FAX：0755-29906228
E-mail：md@latfpc.com　Add：Bld 9, Wanan Road, Shayi Town, Shajing Town, Baoan District, Shenzhen
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