5745187-8 is an HD-20 AMPLIMITE subminiature D receptacle connector from TE Connectivity designed for PCB mounting applications. This shell size 3 connector features 25 contact positions with straight posted socket contacts preloaded with size 20 DF contacts. The connector has dimensions of 2.088 inches (53.04 mm) for dimension A and 1.852 inches (47.04 mm) for dimension B, with a height of 0.494 inches (12.55 mm). Contact plating features gold on the mating end and tin on the termination end with nickel underplating. This connector is commonly used in data communication, instrumentation, and industrial control applications requiring reliable D-sub interconnections.