5-5179010-1 is a 0.8mm pitch fine pitch SMT stacking receptacle connector designed for parallel board-to-board applications. This 40-position connector features 8µ" gold plating and supports stacking heights ranging from 13mm to 16mm when paired with compatible mating plugs. The connector has dimensions of A: 15.20mm (.598"), B: 21.80mm (.858"), and C: 20.20mm (.795"), with a contact pitch of 0.8mm typical. It is RoHS compliant and available in tube packaging, making it suitable for high-density electronic assemblies requiring reliable parallel board interconnections.