5207829-4 is an HD-20 all-plastic straight posted subminiature D connector receptacle designed for high-density interconnect applications. This receptacle features 37 contact positions with a Shell Size 4 configuration and is constructed from UL 94V-0 rated flame retardant thermoplastic housing material. The connector is available with standard .120 inch [3.05 mm] mounting holes and supports post lengths of .125 inch [3.18 mm] or .170 inch [4.32 mm], with contact finish options including duplex gold/tin plating (Plating Code A) or gold flash/tin plating (Plating Code B). The receptacle is preloaded with size 20 DF posted socket contacts and is recommended to be secured with appropriate hardware to a printed circuit board. This connector is ideal for applications requiring compact, reliable interconnections in electronic equipment where space constraints and high contact density are critical design factors.