Board-to-Board Mezzanine Plug for Tight Stack Heights
The Molex 5017450301 is a 30-position plug from the SlimStack 501745 series, designed as the top half of a board-to-board mezzanine interconnect. Gold contacts (8.00µin plating) handle repeated mating cycles in compact consumer and portable electronics. Mated stack heights of 2mm and 2.3mm give the board layout engineer two spacing options without changing the footprint.
What the 0.40mm Pitch and Stack Heights Mean for Your Layout
At this density, the board fabricator needs a controlled impedance stack-up if signals run at high edge rates; otherwise, the pitch alone limits crosstalk between adjacent lines. The mated stacking heights of 2mm and 2.3mm are the vertical gap between the two PCBs after mating — choose the receptacle variant that gives the exact z-height your enclosure allows. The dual-row arrangement packs 30 positions into a footprint roughly 6mm long, which suits space-constrained designs where every millimeter of board edge is spoken for.