5177986-4 is a fine pitch SMT stacking plug connector designed for parallel board-to-board interconnection applications. This 100-position connector features 0.8mm pitch with 8µ" gold plating on contacts for reliable electrical connections. The connector has dimensions of A: 39.20mm (1.543"), B: 45.80mm (1.803"), and C: 44.20mm (1.740"). It is supplied in tape and reel packaging for automated assembly processes. This connector is part of the Free Height (FH) connector series, enabling various stacking height configurations when paired with compatible receptacles. It is RoHS compliant and ideal for high-density electronic applications requiring reliable board-to-board connections.