Because it's a receptacle with bottom or top entry, you can route the board-to-board stack either way – the SMD tails sit on the same side as the mating face, so the connector can be placed on the top or bottom of the PCB without a right-angle header. The LCP housing handles lead-free reflow temperatures without distortion.
If your application needs frequent board swaps or field-service reconnects, the gold-plated 969973-8 is the better fit.
This receptacle mates with any 0.100" square-pin male header (2.54mm pitch, dual-row, 16 positions). Termination is SMD solder; the 0.100" row spacing keeps the footprint clean for auto-placement.