5-5179180-1 is a fine pitch SMT stacking receptacle connector designed for parallel board-to-board interconnection applications. This 0.8mm Free Height (FH) connector features 40 positions with 8µ" gold plating on contacts and is supplied in tape and reel packaging for automated assembly. Key dimensions include A: 15.20mm (.598"), B: 21.80mm (.858"), and C: 20.20mm (.795"), with a contact pitch of 0.8mm. The connector is RoHS compliant and designed for surface mount technology, making it suitable for compact electronic assemblies requiring reliable parallel board connections in telecommunications, computing, and consumer electronics applications.