1-87227-7 is a double-row vertical unshrouded header from the AMPMODU .025 [0.64] Square Interconnection System, featuring 34 positions with 0.100 x 0.100 inch [2.54 x 2.54 mm] centerline spacing. The header utilizes 0.025 inch [0.64 mm] square posts made of copper alloy with Plating B configuration, which features selectively plated gold on the contact area over nickel. The housing is constructed from black thermoplastic with a 94V-0 flammability rating. With dimension A of 1.684 inches [42.77 mm] and dimension B of 1.600 inches [40.64 mm], this RoHS compliant header is suitable for board-to-board interconnection applications in electronic assemblies.