... automotive, medical, computing,storage,instrumentation, traffic, industrial power,battery,fire alarm,CCTV, wirelesscommunication,telecommunication, networking, printer and house ... b)0.2 mm (8 mil)0.05mmSolder MaskMin Solder Mask Dam (a)0.0635 mm (2.5mil ... SMT Pad spacing (c)0.1mm (4 mil)Solder Mask Thickness0.0007"(0.018mm)HolesMin Hole size ... , UL certificate 2012 inverter FR4 94vo pcb with solder mask