0.35mm Pitch Mezzanine Plug for Tight Board Stacks
The Hirose BK13C06-50DP/2-0.35V(895) is a 50-position plug with outer shroud contacts from the BK13C series, designed for board-to-board mezzanine stacking where the vertical clearance is under 1 mm. Its 0.014" (0.35mm) pitch packs 50 circuits into a compact two-row footprint, and the 0.6mm mated stacking height suits applications like smartphone mainboards, wearable PCBs, or any assembly where the inter-board gap is measured in tenths of a millimeter.
What the 0.6mm Stack Height and 0.35mm Pitch Mean for Layout
At 0.35mm pitch, the trace escape from the inner rows requires micro-vias or very narrow neck-downs; a standard 0.5mm-pitch fanout won't fit. The 50 positions in two rows give a 25-per-row layout, so the footprint needs staggered via pads on the inner row to avoid shorting. The gold flash at 1.97µin (0.050µm) is a thin deposit — adequate for the 10-30 insertion cycles typical of a consumer device's service life, but not for repeated field reconnects.