5747143-2 is an HD-20 AMPLIMITE subminiature D receptacle connector designed for PCB mounting applications. This connector features 50 contact positions with shell size 5 and is preloaded with straight posted ACTION PIN socket contacts. The connector has dimensions of 2.635 inches (66.93 mm) for dimension A, 2.406 inches (61.11 mm) for dimension B, and 0.620 inches (15.75 mm) for dimension C, with .120 [3.05] mounting holes. The contact finish uses plating code A, which consists of phosphor bronze with .000030 [0.00076] gold on the mating end and tin on the termination end, with entire contact .000050 [0.00127] (min.) nickel underplated. This connector is ideal for high-density interconnect applications requiring reliable signal transmission in computing, telecommunications, and industrial equipment.