1-5177986-6 is a 0.8mm pitch fine pitch SMT stacking connector plug designed for parallel board-to-board applications. This 140-position connector features 8µ" gold plating for reliable electrical contact and is supplied in tape and reel packaging for automated assembly. The connector has dimensions of A: 55.20mm (2.173"), B: 61.80mm (2.433"), and C: 60.20mm (2.370"), with a 0.8mm typical contact pitch. It is part of the Free Height (FH) connector series that supports various stacking heights from 5mm to 16mm when paired with compatible receptacles. This connector is ideal for high-density interconnect applications in consumer electronics, telecommunications, and computing devices where space-saving parallel board connections are required.