The 1-87499-0 is a single-row receptacle housing assembly part of the AMPMODU Mod IV Interconnection System, designed for wire-to-board applications with 5 positions and 0.100 inch [2.54 mm] centerline spacing. The housing features a dual entry, end-stackable design with low-profile construction and 0.200 inch [5.08 mm] tine spacing, constructed from glass-filled thermoplastic material rated 94V-0. The assembly supports contact current ratings of 3 amperes with termination resistance of 12 milliohms maximum for beryllium copper contacts or 20 milliohms maximum for copper-tin-phosphor bronze contacts. This receptacle assembly is commonly used in interconnection systems requiring reliable, stackable wire-to-board connections with standardized spacing and multiple contact plating options for various environmental and performance requirements.