Non-European Format Size: 114.3 x 165.1 mm (4.5" x 6.5") Material thickness: 1.6 mm FR4 epoxy optical fibre Copper coating 35 μm on both sides, with through hole Hole pattern: 2.54 x 2.54 mm (1//20") 40 x 60 bore hole rows 40 x 56 2 mm quadratic soldering islands Hole diameter: 1.02 mm (0.4") Max