... white,extreme white,black,matte black,dark brown,yellow,red,blue,transparentMin. solder mask clearance0.003” ... Thickness0.0004”SilkscreenColorWhite,black,yellow,red,blue,greenMin. trace width0.005”Min. size0 ... 004”)Semi-holeYSurface FinishHASL,HASL pb free,immersion gold,immersion silver,immersion tin,O.S.P ( ... surpass them. 2 Layer Immersion Gold PCB With Gold Finger