5178647-4 is a 36-position CHAMP OSD receptacle connector designed for board-to-board interconnection applications. This "H" type connector features tin-plated housing with 0.2 µm gold plating on contacts for reliable electrical connections. The connector utilizes a 1.27 mm pitch configuration with precise dimensional tolerances suitable for PCB mounting. Common applications include high-density electronic assemblies where reliable board-to-board connections are required.