120-Position Mezzanine Receptacle at 0.60mm Pitch
The Hirose FX8C-120S-SV5(91) is a 120-position receptacle from the FunctionMax™ FX8C series, designed for high-density board-to-board stacking applications. This SMT connector uses center strip contacts in a 2-row layout on a tight 0.024" (0.60mm) pitch — the kind of pitch that drives the board layout more than the current rating does, because the routing channels between pads get narrow fast. The mated stacking heights span 10mm, 11mm, 12mm, 14mm, and 16mm, giving you options for card spacing without changing the footprint. Gold contact finish is standard here, which matters for the mating cycle count in a production environment where boards get mated and unmated during test or field service.
Height Above Board: 8.95mm
The 0.352" (8.95mm) height above board is a fixed dimension for this variant — it sets the z-axis clearance for the receptacle side. Pair it with the matching FX8C header at one of the five stacking heights to get the total board-to-board gap.