Board-Stacking Interconnect for Tight Z-Height Budgets
The Molex 5046222010 is a 20-position plug from the SlimStack 504622 series, designed as a board-to-board mezzanine interconnect. Its defining characteristic is the 0.014" (0.35mm) pitch, which allows a high-density signal path in a compact footprint.
What the 0.35mm Pitch and 0.6mm Stack Height Mean for Layout
The 0.35mm pitch is the tightest constraint for the PCB layout engineer. It dictates the trace width and spacing on the board — standard 0.5mm pitch routing rules do not apply here; the board house must support fine-line etching and likely a microvia stack-up to escape the inner rows. This is not a general-purpose mezzanine height; it is specific to applications where the total enclosure thickness is under 1mm, such as a smartphone main board to daughter card connection. The 20 positions in two rows give a 10-per-row arrangement, which matches a 20-signal bus or a parallel data interface.