5-102589-5 is a single-row receptacle assembly part of the AMPMODU Interconnection System Mod IV series, designed for printed circuit board applications with dual entry, end-stackable configuration. The assembly features 50 positions with 0.100 inch by 0.100 inch (2.54 x 2.54 mm) centerline spacing and 0.200 inch (5.08 mm) tine spacing, with a 0.125 inch (3.18 mm) tail length for standard solder connections. The housing is constructed from glass-filled thermoplastic rated 94V-0, with duplex gold and matte tin plating on contact and solder areas, and includes built-in guides for alignment before contact engagement and closed entry receptacle housings for positive mating. This receptacle assembly is commonly used in low-profile, end-stackable interconnection applications requiring reliable board-to-board or board-to-cable connections in industrial and commercial electronic equipment.