The 745078-4 is an AMPLIMITE subminiature D-type connector receptacle designed for high-density electronic interconnections. It features phosphor bronze socket contacts with selective gold or gold flash plating on the mating end and tin-lead plating on the termination end, with a minimum 0.00127 inch nickel underplate for enhanced durability. The housing is constructed from 94V-0 rated thermoplastic black material, and the connector offers multiple mounting configurations including standard mounting holes, 4-40 threaded inserts, or fixed female screwlocks. Key dimensions include a mating face width of 0.243 inches (6.17 mm) and contact spacing of 0.020 inches (0.508 mm) typical. This connector is ideal for applications requiring reliable, compact interconnections in instrumentation, data acquisition, and industrial control systems where space constraints and environmental durability are critical.