9-146257-0 is a double row vertical breakaway header with solder tails, part of the AMPMODU .025 [0.64] square interconnection system. This header features 80 positions with .100 [2.54] centerline spacing and dimensions of A = 3.984 [101.19] inches/mm and B = 3.900 [99.06] inches/mm. The header has C = .120 [3.05], D = .230 [5.84], and E = .185 [4.70] dimensions with 30 Au Duplex plating option. It can be broken to desired number of positions using Tool Kit No. 314816-1. This RoHS compliant header is suitable for board-to-board interconnection applications requiring reliable vertical mounting configurations.