The Hirose FX10A-96S-SV is a 96-position receptacle from the FunctionMax™ FX10 series, built for board-to-board mezzanine stacking at a 0.020" (0.50mm) pitch. This is a centre strip contact design — the mating interface uses a row of flat contacts along the centreline of the connector, not perimeter pins, which keeps the footprint narrow for high-density routing. The two-row arrangement packs 96 signal lines into a board footprint that stays compact, and the 0.50 mm pitch means the PCB layout needs careful trace-and-space planning between pads — no room for via-in-pad without micro-via or HDI techniques. The receptacle mates with the matching FX10 header (FX10A-96P-SV(71) being the direct 96-position counterpart) to achieve a mated stack height of either 4mm or 5mm, depending on the header variant selected. The 0.126" (3.20mm) height above board of this receptacle, combined with the header height, sets the board-to-board gap — a parameter that drives enclosure z-height and component keep-out on the opposing board. It is not a high-current power contact; the gold thickness and narrow pitch together say this is a signal interconnect.
Position Count and Series Siblings
The FX10 series offers the same 0.50 mm pitch and 2-row layout across several position counts. The 96-position FX10A-96S-SV sits between the 144-position FX10A-144S-SV and the 168-position FX10A-168S-SV, all sharing the identical 0.126" (3.20mm) board height and SMT footprint pattern. The choice comes down to signal count: 96 circuits for moderate-density interconnects, 144 or 168 for higher I/O needs on the same board-to-board gap.
Board Layout and Assembly
The 0.50 mm pitch requires a solder paste stencil aperture sized to avoid bridging between adjacent pads.