... .0008” (0.02mm) Aspect ratio 20(5:1) Solder Mask Color green,light green,white,black,dark brown,yellow,red ... ,blue Min. solder mask clearance 0.003”(0.07mm) Thickness 0.0005”-0.0007 ... 006”(0.15mm) CNC Tolerance ±0.004”(0.1mm) V-Cut Depth( residual thickness ) FR-4(1/3+-0.1mm);FR ... CEM-3(1/2+-0.1mm) V-cut angle 15°,18°,30° V-cut Shape line,hole,V-shape Surface Finish ...