5179029-9 is a fine pitch SMT stacking connector plug designed for parallel board-to-board interconnections in compact electronic assemblies. This connector features 180 contact positions with a 0.8 mm free height (FH) configuration, enabling minimal vertical stacking in space-constrained applications. The connector dimensions are 71.20 mm (length A), 77.80 mm (length B), and 76.20 mm (length C), with contact plating available in either 8 µm or 30 µm gold. The product is RoHS compliant and available in tube packaging with pickup cap options, making it suitable for high-volume automated assembly processes. Common applications include telecommunications equipment, data center interconnects, and other high-density board stacking scenarios where reliable signal transmission and mechanical stability are essential.