5745412-1 is an AMPLIMITE HD-20 subminiature D connector plug designed for high-density interconnect applications. This straight posted connector features a shell size 3 configuration with 25 contact positions and includes grounding indents for improved EMI shielding. The connector has dimensions of 2.088 inches (53.04 mm) for dimension A, 1.852 inches (47.04 mm) for dimension B, 0.494 inches (12.55 mm) for dimension C, and a post length of 0.125 inches (3.18 mm) suitable for PCB thicknesses of 0.062-0.093 inches (1.58-2.36 mm). The contacts feature duplex plating with gold on the mating end and tin on the termination end with nickel underplating. This connector is ideal for data communication, industrial control, and instrumentation applications requiring reliable signal transmission.