1-5177986-1 is a fine pitch SMT stacking connector plug designed for parallel board-to-board applications in compact electronic assemblies. This connector features a 0.8 mm pitch with multiple position options ranging from 40 to 200 positions, enabling flexible board interconnection in space-constrained designs. The connector is supplied in tape-and-reel format for automated assembly and is available with 8 µ" or 30 µ" gold plating options to ensure reliable contact and corrosion resistance. Key dimensional specifications include a contact diameter of 0.8 ± 0.03 mm and a mounting hole diameter of 1.2 ± 0.03 mm, with a typical free height of 0.8 mm. This connector is ideal for high-density interconnect applications in consumer electronics, telecommunications, and industrial equipment where reliable stacking and miniaturization are critical requirements.