12-Layer PCB with Taconic Material, Immersion Tin, Impedance Controlled, Vias Plugged with Solder Mask, RoHS Compliance. 12-Layer PCB,Taconic Material,2.0mm ... layers - 8mil (0.2mm)4 layers - 16mil (0.4mm)6 layers - 24mil (0.6mm)8 layers - 32mil (0.8mm ... mmPeel Strength1.4N/mmSolder Mask Abrasion>= 6HFlammability94V-0Surface FinishingHASL, LF-HASL, ENIG, Flash Gold, Immersion Tin, Immersion Silver, OSP ...