5103311-7 is a 34-position double-row low profile vertical header from the AMPMODU .025 [0.64] Square Interconnection System. This header features a 0.100" [2.54 mm] centerline pitch with dimensions of A = 2.000" [50.80 mm] and B = 1.600" [40.64 mm]. The contact posts are 0.025" ± 0.001" [0.635 ± 0.03 mm] square with Plating A option featuring duplex plating of 0.000030" [0.00076 mm] gold on the contact area and 0.000100-0.000200" [0.00254-0.00508 mm] tin on the solder area, with entire post underplated 0.000050" [0.00127 mm] nickel. The header is designed for manual insertion into PC boards with recommended hole diameter of 0.035" ± 0.003" [0.89 ± 0.08 mm]. This RoHS compliant component is suitable for board-to-board interconnection applications and mates with AMPMODU wire-applied receptacles and MTE receptacles.