104128-3 is a 16-position double-row vertical header from the AMPMODU .025 [0.64] square interconnection system. This connector features a centerline pitch of .100 [2.54] mm and overall dimensions of A = 1.100 [27.94] inches and B = .700 [17.78] inches. The header has dimensional specifications of C = .585 [14.90] and D = .917 [23.29] inches, designed for manual insertion into PCB applications. This component is part of TE Connectivity's AMPMODU interconnection system, commonly used in board-to-board connections in electronic equipment.