87220-1 is a single-row vertical unshrouded header from the AMPMODU interconnection system, designed for board-to-board connections. This 2-position header features a 0.100 inch (2.54 mm) centerline spacing with 0.025 inch (0.64 mm) square posts and Plating A post finish. The header has an overall dimension A of 0.184 inch (4.67 mm) and dimension B of 0.100 inch (2.54 mm), with a post diameter of 0.035±0.003 inch (0.89±0.08 mm). The contact area measures 0.200 inch (5.08 mm) reference, and the product is RoHS compliant. This header is suitable for general-purpose PCB interconnection applications requiring reliable vertical mating connections.