6-534998-0 is a double row top entry header from the AMPMODU .025 [0.64] Square Interconnection System, designed for board-to-board interconnection applications. This 20-position header features a .100 [2.54] centerline spacing with dimension A of 1.000 [25.40] inches and dimension B of .900 [22.86] inches. The header utilizes .025 [0.64] square post contacts and is available with Plating A contact finish. This RoHS compliant component is suitable for various electronic interconnection applications requiring reliable double row vertical connections.