Precise Muti-layered PCB Designation　

l Six-layered BGA module PCB: Board thickness 1.0mm

Precise Six-layered PCB has a rigorous and compact layout, also it requires data differential circuits, equal sized signal circuits and impedance control. Hence, difficulty of circuit etching process is high.

Minimum Via diameter: 0.2mm

Minimum line width/space: 3.5mil.