0.50 mm Pitch Interposer for Tight Mezzanine Stacking
The Hirose FX10-120IP-36Q-8H(03) is a 120-position interposer from the FunctionMax™ FX10 series, built for board-to-board stacking at a 0.020" (0.50mm) pitch. The 2-row layout packs 60 contacts per row, which sets the board keep-out zone — at this pitch the routing escapes need micro-vias or HDI layers to break out the inner rows.
Stack Height Range Covers Common Board Gaps
The mated stack height spans 8mm to 10mm, so the same interposer works across different mezzanine spacings — useful when a design reuses the interposer across multiple board pairs with different component heights on the underside. The stacking mount means there's no solder tail to protrude; the interposer sits between the boards and the contacts compress on mating.
No last-time-buy or end-of-life notice is on record. There is no official second-source or direct cross-reference; the FX10-144IP-8H(03) is a position-count variant, not a functional replacement.