643226-1 is a socket header component for the Universal MATE-N-LOK II 2-circuit power connector system designed for wire-to-board applications. This connector features a 5.0 mm power key design with a compact mated height of 19.4 mm and operates with a pre-tin contact finish. The socket header is configured with dimensions of 0.550 inches (13.97 mm) width, 1.245 inches (31.62 mm) length, and 0.830 inches (21.08 mm) height, and is rated UL94V-0 for flammability. The connector incorporates protective design elements including locking levers surrounded by walls to prevent tangling with wires and housing lances that help prevent contact tangling. This component is commonly used in power circuits for home appliances, particularly gas appliances, where reliable electrical connections and compact form factors are essential.