At 0.80 mm pitch, this dual-row SMT connector packs high density into a compact footprint — the position count matches a 120-circuit BOM line exactly.
What stacking heights does this plug support?
The 2-5177986-5 supports four mated stacking heights — 7 mm, 11 mm, 15 mm, and 19 mm — depending on the mating receptacle height. The plug itself sits 6.85 mm above the board. That height range covers common mezzanine spacing from tight card-to-card to wider board separation where airflow or component clearance matters.
How does the contact finish affect the design?
Gold plating at 8.00 µ" on the mating surface resists corrosion in non-condensing environments.