0.50 mm pitch, 144 positions — board-stacking interposer for dense mezzanine links
The Hirose FX10-144IP-8H(03) is a 144-position interposer from the FunctionMax™ FX10 series, built for board-to-board stacking at a 0.020" (0.50mm) pitch. It mates within a 8mm ~ 10mm stack height range, which covers common mezzanine gaps in telecom line cards, server blades, and compact industrial controllers where routing density drives the board layout.
Position-count alternatives in the same pitch and stack-height envelope
For a BOM that needs more or fewer signal lines at the same 0.50 mm pitch and 8mm ~ 10mm stack height, the FX10 series offers the FX10-120IP-36Q-8H(03) at 120 positions and the FX10-168IP-8H(03) or FX10-168IP-8PH(03) at 168 positions. The 144-position part here splits the difference — 24 positions more than the 120, 24 fewer than the 168 — so a redesign that lands on a different circuit count can stay within the same footprint class and connector family.