643429-1 is a 5.0 mm Power Key Connector (5.0 PKC) wire-to-board connector designed for power circuits in home appliances, particularly gas appliances. This connector features a 15-circuit configuration with a 1.300 inch (33.02 mm) A dimension and UL94V-2 flammability rating, providing robust power distribution capabilities. The connector incorporates pre-tinned socket finish with duplex plating (0.000030 inch minimum gold in mating area over 0.000050 inch minimum nickel underplate), ensuring reliable electrical contact and corrosion resistance. The design includes a compact 19.4 mm mated height, double lock plate for complete contact loading, and protective walls surrounding locking levers to prevent wire tangling. The connector is recognized under UL Component Program (File No. E28476) and certified by Canadian Standards Association (File No. LR7189), making it suitable for demanding power distribution applications requiring high reliability and safety compliance.