3-1670730-1 is a vertical PCB header connector designed for industrial and commercial transportation applications. It is part of the HDSCS connector family manufactured by TE Connectivity and features a 3-position configuration with Group A contact specifications and 1.5K contact size. The connector is supplied without a flange mounting option and is available in multiple keying colors including Blue, Black, Gray, and Green to support various circuit identification and mating requirements. This connector is commonly used in printed circuit board assemblies where reliable electrical connections and environmental sealing are required in demanding transportation and industrial environments.