5mm thickness PCB 1) Thickness: 0.1mm-5mm 2) Minimum linewidth 0.075mm/3mil 3) Minimum gap ?0.065/2.8mil 4) Minimum aperture inradium 0.15mm 5) Minimum aperture external diameter 0.45mm 6) Minimum BGA: 0.2mm 7) Layerï¼?4 layers through hole non-impedance