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12L

parameter
12 l layer:
Material: fr-4 Tg170.
Thickness: 2.0 min
Copper thickness: 35/18/18/35um.
Line width: 3.5/4 mil.
Most small hole: 0.25mm
Surface treatment: ENIG(2U')
Technical difficulty: high multilayer board precision circuit board. HDI

Details

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