5747090-2 is an AMPLIMITE HD-20 subminiature D receptacle connector designed for PCB mounting applications. This connector features 9 contact positions in a shell size 1 configuration with threaded inserts for secure mounting. The contacts are made of phosphor bronze with duplex plating (0.000030 inch gold on mating end, tin on termination end) over a minimum 0.000050 inch nickel underplate. Key dimensions include 1.213 inches (30.81 mm) for dimension A, 0.984 inches (24.99 mm) for dimension B, and 0.509 inches (12.93 mm) for dimension C. This connector is suitable for applications requiring reliable signal connections in industrial, computing, and communication equipment.