Mezzanine Board-to-Board Plug at 0.60mm Pitch
The plug carries outer shroud contacts, meaning it receives the mating receptacle's inner contacts, and the 4mm mated stack height sets the fixed gap between the two PCBs.
What the 0.60mm Pitch and 140 Positions Mean for Layout
The 0.60mm pitch is tight — roughly half the pitch of a standard 1.27mm mezzanine connector — which means the escape routing on the PCB needs a fine-line trace and via capability. Each of the 140 positions carries a signal or power path, and with two rows the connector footprint is a narrow rectangle that fits along a board edge or in a dense routing channel.
Surface-Mount Termination and Assembly Fit
This is a surface-mount (SMT) plug — no through-hole tails, so the board requires a solder paste stencil and reflow profile matched to the 0.60mm pitch. The board guide eases placement alignment in pick-and-place, and the solder retention features hold the part in position during reflow. The 4mm mated stack height is the dimension that drives the mezzanine board spacing: if your design calls for a 4mm gap between parallel PCBs, this plug paired with the matching receptacle sets that height exactly.