8L

parameter
Layer: 8 l
Material: fr-4 Tg150.
Plate thickness: 1.8mm
Copper thickness: 35/18/18/35um.
Linewidth: 4/4 mil.
Most holes: 0.2mm
Surface treatment: ENIG(2U')
Technical difficulties:
Blind hole, gold finger 3U, impedance control.
Application:
Industrial motherboard