... hole/to pad Tolerance±0.05mm/±0.2mm Solder Mask Pad no Open soldermask must cover all on both ... reject soldermask inside the hole on both side Solder Mask Thickness0.7mil,raised H≤0.05Colour green,blue,red, ... all on pad,thickness≥0.20mmCarbon Inkcover all on trace,Value≤30Ω Outline Outline Tolerance±0.2mmBeveling30°,45°V-cut ... ,ISO,ROHS,UL, Welcome to visit WALBOND ! 4L PCB with BGA and gold finger