Board Fit at 0.40 mm Pitch
The Molex SlimStack 5009130602 is a 60-position receptacle with center strip contacts, built for dense board-to-board mezzanine stacking. At 0.016" (0.40 mm) pitch across two rows, the footprint demands tight trace-and-space routing on the PCB — typical design rules for this pitch call for 0.20 mm trace width and 0.20 mm spacing to route a single signal between pads. The 1.8 mm mated stacking height sets the z-axis gap between parallel boards, so the mezzanine standoff and opposite-side component keep-out must match that dimension.
Solder Retention and Reflow Fit
Solder retention tabs are built into the part — these are the metal anchors on the ends of the housing that reflow into the board pads. For a technician reworking a board, those tabs mean the connector stays put until the solder is fully liquid; prying it off cold will lift the pads.