5-147377-9 is an AMPMODU System 50 unshrouded header connector designed for board-mount applications, available in 24-position configuration packaged in tape and reel format. The connector features copper alloy contacts with duplex plating of 0.000030 inch gold in the mating area and 0.000150 inch tin on solder posts, with an entire contact underplated with 0.000050 inch nickel for enhanced durability and conductivity. The header has a 0.100 inch post length and 0.050 inch typical contact spacing, with a dimension A of 0.730 inches (18.54 mm) and dimension B of 0.550 inches (13.97 mm). This connector is commonly used in electronic assemblies requiring reliable interconnection between circuit boards and external devices, offering excellent mating performance with compatible AMPMODU receptacles and providing a cost-effective solution for standard interconnection needs.