Layer Stackup and Thickness

Here is the general thickness per layer in a typical 4 layer stackup

Final Thickness

0.8 mm

1.0 mm

1.2 mm

1.6 mm

Solder Mask

0.010 mm

Copper Plating

0.025 mm

 Copper Foil (layer 1)

0.035 mm

PrePreg

0.20 mm

Copper Foil (layer 2)

0.0175 mm

Core

0.3 mm

0.5 mm

0.7 mm

1.1 mm

Copper Foil (layer 3)

0.0175 mm

PrePreg

0.20 mm

Copper Foil (layer 4)

0.035 mm

Copper Plating

0.025 mm

Solder Mask

0.010 mm