AXK5S40047YG is a P5KS series narrow-pitch board-to-board connector socket designed for high-density interconnections with a 0.5 mm contact pitch and 40 pins. The connector features an 8.0 mm mated height and utilizes Panasonic's "Tough Contact" construction for enhanced contact reliability and resistance to adverse environments. The socket maintains a low profile while providing an extended effective mating length to ensure reliable insertion and withdrawal cycles. This connector is RoHS compliant and suitable for automatic mounting applications. Common applications include compact electronic assemblies, telecommunications equipment, and industrial control systems where space constraints and high reliability are critical requirements.