5177985-5 is a fine pitch SMT stacking receptacle connector designed for parallel board-to-board interconnection applications. This connector features a 0.8mm pitch with 120 positions and 8µ" gold plating for reliable electrical contact. The connector has dimensions of A: 47.20mm (1.858"), B: 53.80mm (2.118"), and C: 52.20mm (2.055"). It is supplied in tape and reel packaging for automated assembly processes. This connector is part of the Free Height (FH) connector series and is RoHS compliant, making it suitable for various electronic applications requiring compact, high-density board-to-board connections.