Board-Stacking Fit for Tight Z-Height
The Hirose BM23PF0.8-24DS-0.35V(51) is a 24-position receptacle from the BM23 series, designed for board-to-board mezzanine stacking. Its 0.35 mm pitch and 0.80 mm mated stack height place it in the ultra-fine-pitch, low-profile segment — the kind of connector you spec when the gap between parallel PCBs is barely a millimeter.
What the 0.35 mm Pitch and Gold Flash Mean for Your Layout
The 1.97 µin gold contact finish is a light flash, adequate for the limited mating cycles typical of a one-time assembly or a field-swap module, but not for repeated reconnection.
24 Positions vs 20 and 30 — Picking the Right Circuit Count
The BM23 series offers the same 0.35 mm pitch and 0.80 mm stack height across 20, 24, and 30 positions. The 24-position BM23PF0.8-24DS-0.35V(51) sits between the 20-position BM23PF0.8-20DS-0.35V(51) and the 30-position BM23PF0.8-30DS-0.35V(895). The decision is purely a circuit-count match to your BOM — the footprint length scales with position count, so confirm your signal count before committing.