168-Position Interposer for High-Density Board Stacking
The Hirose FX10-168IP-8PH(03) is a 168-position interposer from the FunctionMax™ FX10 series, designed for stacking board-to-board connections at a tight 0.020" (0.50mm) pitch. The mated stack height spans 11mm to 13mm, giving the board designer a defined z-height window for parallel board spacing.
The 11mm to 13mm mated stacking heights mean this interposer fits between two parallel PCBs with a gap in that range — no shims or standoffs needed. The 0.50mm pitch packs 168 circuits into a compact footprint, so the board layout needs fine trace routing to break out all positions.
Comparing the 168-Position Variants
The FX10-168IP-8PH(03) shares its 168-position count, 0.50mm pitch, 2-row layout, and 30.0µin gold plating with the FX10-168IP-8H(03). The suffix difference — "PH" vs "H" — typically indicates a packaging or keying variation in the FX10 series, not a functional change in the interposer itself. Both are active parts, so the choice comes down to tray compatibility or BOM history rather than electrical fit.