5-147377-8 is a double row vertical surface-mount receptacle connector from the AMPMODU System 50 interconnection series, designed for board-to-board applications. This 100-position connector features a 0.050 x 0.100 inch (1.27 x 2.54 mm) centerline pitch and is packaged in tape and reel format without hold downs, including a vacuum pick and place cover for automated assembly. The housing is constructed from glass-filled thermoplastic with a black finish and 94V-0 flammability rating, while contacts are made of copper alloy with duplex plating featuring 0.000030 inch (0.00076 mm) gold in the mating area, 0.000150 inch (0.00381 mm) tin on solder posts, and 0.000050 inch (0.00127 mm) nickel underplating. Key dimensions include Dimension A of 2.630 inches (66.80 mm), Dimension B of 2.450 inches (62.23 mm), and Dimension E of 0.000 inches. This connector is ideal for high-density board-to-board interconnections in electronic assemblies requiring reliable surface-mount technology.