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Four-layer impedance motherboard

product name:

Four-layer impedance motherboard

 
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Detailed description

Four-layer impedance main board: 1.6mm, green oil;
Finished copper thickness: 1/1OZ;
Surface treatment: OSP;
Minimum line width/spacing: 0.075mm/0.075mm BGA 0.25mm;
Minimum aperture: 0.2mm;
Solder mask bridge: 0.1mm.