9-146304-0 is a single-row AMPMODU interconnection system header designed for the AMPMODU .025 [0.64] square interconnection system with .100 [2.54] inch centerline spacing. This 40-position header features solder tails for direct PCB mounting and is configured with .120 [3.05] inch contact area spacing (C dimension), .230 [5.84] inch post diameter (D dimension), and .185 [4.70] inch post height (E dimension). The header has overall dimensions of 3.984 [101.19] inches in length (A dimension) and is available with plating options A, B, and C for various environmental and performance requirements. This component is commonly used in modular interconnection applications requiring reliable, repeatable connections with standardized spacing and is RoHS compliant for modern electronic assembly standards.