Hybrid Signal-Power Receptacle for Backplane and Power Distribution
The 51915-011LF: This hybrid layout is designed for backplane or power-distribution applications where a single connector must carry both logic-level signals and bus-level power — common in server, storage, and telecom chassis. A guide pin on the mating face aligns the two halves before the contacts engage, preventing bent signal pins on blind-mate assemblies.
Contact Layout and Loaded Positions — What to Check
The 51915-011LF has 42 total contact positions but only 30 are loaded with terminals. The contact layout is 32 signal, 10 power — meaning the power blades occupy 10 positions and the signal pins occupy 20 of the 32 available signal slots, leaving 12 signal positions unloaded. Before committing the BOM, verify the actual loaded pin count against the circuit count required by your application. A 30-position loaded part does not match a 42-position schematic unless the unloaded positions are intentionally left open.