5100143-1 is a 2mm Hard Metric PCB mount connector plug assembly designed for board-to-board interconnection applications. It features a Type A configuration with 110 positions distributed across 5 rows (A, B, C, D, E), providing multi-purpose center mating polarization for reliable signal routing. The connector is vertically mounted with a module length of 50.00 mm and employs gold-plated (30 µm) mating contacts on a phosphor bronze base with short tail contact style, ensuring excellent electrical performance and durability. The housing is constructed from PBT-GF (polybutyrene terephthalate glass-filled) material in gray with UL 94V-0 flammability rating, and termination is accomplished via tin over nickel plating on the 2mm HM interface. This connector is RoHS and ELV compliant, making it suitable for industrial backplane and midplane applications requiring robust, high-density interconnection solutions.