... 0mm,immersion sliver 6layer,2.0mm,immersion gold,BGA,half hole 12layer, 2.4mm, BGA, different impedance 8layer, 0.8mm, immersion gold ... control HDI 14layer, 1.6mm, matt green, BGA, impedance contro14layer, 1.6mm, matt green, BGA,impedance control With regard to our PCB ... drilling)0.076mm(3mils)OSPAspect rations13:1STT(Selected immersion technology)BGAφ0.5mm(20mils)MaterialGetekMin line W/S0.075/0.075mm ...