The SMT termination and board guide feature make it a pick-and-place-friendly part for mid-density parallel PCB connections. This connector is specified for applications where two PCBs need to be stacked at a fixed distance — common in telecom line cards, industrial control modules, and compact computing platforms. The mated stacking heights span 9mm, 10mm, 11mm, and 12mm, giving the board designer a range of z-height options without changing the footprint.
Pitch and Footprint — What the 0.80mm Means for Board Layout
The 80 positions in two rows means the footprint is roughly 32 mm long, which fits within a typical card edge or module outline. The board guide adds a couple of mm of keep-out at each end for the alignment posts.
This is not a flash-plate; it will hold up to several dozen matings without exposing the base metal. For a mezzanine connector that may be unmated during debug or rework, that matters.
Stacking Height Selection
The 7-5179180-3 supports mated stacking heights of 9mm, 10mm, 11mm, and 12mm. If your design needs a 10mm stack, pair this receptacle with the corresponding FH header that brings the total to 10mm. The 9mm and 12mm options cover the common range for mezzanine cards.