HDI pcb Printed circuit board, china pcb manufacture

Layer count: 18L

materials:  M6

Board thickness:  3.0+/-0.3mm

Finishing Size: 210x395.2mm

Min Line w/s: 3.2/3.5mil

Min drill size [FHS/DHS] : 0.20mm/0.30mm

Plating  AR DHS : 11.7:1

Hard gold thickness: 4UM

Surface finish: ENIG

Impedance:  Tol: +/-7%, the deviation of the impedance in the same layer must not exceed +/- 2Ohm

Other :  Back drill, Rotated 7 degree.