Board-Stacking Fit: The Height Range That Matters
The Hirose FX8C-60S-SV5(71) is a 60-position, dual-row receptacle from the FunctionMax™ FX8C series, built for parallel board-to-board stacking. What sets this variant apart is its mated stacking height range — it accommodates 10mm, 11mm, 12mm, 14mm, and 16mm stack heights, giving you flexibility across different board spacing requirements in the same footprint. The 0.60mm pitch keeps the overall board footprint tight, routing 60 signals through a compact dual-row layout.
Board Guide: Why It Matters for Assembly
This receptacle includes a board guide feature — molded alignment posts on the connector body that engage with matching holes on the mating header before the contacts touch. On a 60-position, 0.60mm pitch connector, that alignment is what prevents bent contacts during blind-mate assembly. If you're populating boards in a reflow line, the board guide also takes shear stress off the SMT solder joints during handling and mating.
The closest functional peer is the FX8C-60S-SV(71) — same 60 positions, same 0.60mm pitch, same gold-plated contacts, same board guide. The difference is the mated stack height: the -SV5(71) supports 10mm to 16mm, while the -SV(71) is fixed at 3.96mm. If your board stack needs a low profile under 4mm, the -SV(71) is the fit. For anything taller — and especially if you want the option to adjust stack height across multiple board designs — the -SV5(71) covers the range with one part number.