Board-fit and stack-height check
The 91618-317ALF: That number is fixed by the receptacle body height plus the mating header — confirm your enclosure z-clearance against this dimension before layout. The receptacle accepts bottom or top entry, meaning the same part can be loaded on either side of the board — one line item covers both orientations.
SMT termination and board lock for reflow
A pick-and-place pad on the top of the housing lets the vacuum nozzle grab the part without touching the contacts — reduces placement skew on high-speed lines.
Contact material is phosphor bronze, a common spring alloy that resists stress relaxation over temperature cycles.
Supplied in Tape & Reel (TR) packaging, which is the standard format for SMT pick-and-place feeders.