5205738-1 is a 25-position D-subminiature receptacle connector designed for vertical PCB mounting applications. This HDP-20 series connector features a full metal steel shell with zinc plating, size 3 configuration, and through-hole PCB mount style. The connector utilizes phosphor bronze contacts with gold plating on the mating area and tin-plated solder tails with a termination post length of 3.20 mm. It supports recommended PCB thicknesses of 1.57 mm and 2.36 mm, with wave solder capability up to 265°C. The connector is RoHS/ELV compliant with UL 94V-0 flammability rating, making it suitable for standard board-to-board interconnect applications requiring reliable D-sub connectivity.