The 5499374-8 is an IDC (Insulation Displacement Contact) vertical receptacle connector designed for ribbon cable interconnect applications. It features a double-row configuration with 0.050" x 0.050" [1.27 x 1.27 mm] centerline spacing and is compatible with Micro-MaTch female top entry PCB connectors. The contact system includes gold plating in the mating area (0.00076" [0.0193 mm]), tin plating on the solder tail (0.000150" [0.00381 mm]), and nickel underplating (0.000050" [0.00127 mm]) for enhanced durability and electrical performance. The holddown is constructed from copper alloy with tin plating over nickel. This connector is RoHS compliant and available in multiple position configurations, making it suitable for board-to-board and ribbon cable interconnection in industrial and commercial applications.