Pitch and Position Count — Board Fit First
The 77311-818-07LF: All 7 positions are loaded, so no unpopulated holes to account for in layout.
Current, Temperature, and Plating — Power and Duty Cycle
Rated 3 A per contact, which is the derated current for the phosphor bronze contact with 15 µinch gold or GXT™ mating finish.
Peer Comparison — 7 vs 8 Positions
The 8-position sibling 77311-818-08LF shares the same pitch, finish, current rating, and material stack — only the circuit count differs. If the BOM calls for 8 positions, that is the direct drop-in; this 7-position version is for a 7-circuit layout.