643423-1 is a 6-circuit polarized socket header designed for wire-to-board power connector applications within the 5.0 mm Power Key Connector (5.0 PKC) series. This socket header features a matrix configuration with standard tail terminals, pre-tin socket finish, and UL94V-2 flammability rating. The connector has a compact design with 19.4 mm mated height and 5.0 mm contact centerline spacing, with an A dimension of 0.550 inches (13.97 mm). It is designed to mate with Universal MATE-N-LOK plug housings using pin contacts. Common applications include power circuits in home appliances, particularly gas appliances, where reliable power connections are required.