1-5177986-5 is a 0.8mm pitch fine pitch SMT stacking connector plug designed for parallel board-to-board applications. This 120-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: 47.20mm (1.858"), B: 53.80mm (2.118"), and C: 52.20mm (2.055"). 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 RoHS compliant and ideal for high-density interconnect applications in consumer electronics, telecommunications, and computing devices.