Phenolic resin laminated paper, FR2, 1.5 mm• Single-sided 35 µm Cu• Organic surface protection (OSP)• 37 x 58 soldering pads, Ø 2.2 mm• Hole pattern 2.54 x 2.54 mm• Hole diameter 1.0 mm• Size: 100 x 160 mm• Connector: 31-pin, DIN 41617