0.40 mm pitch, 90 positions — tight-pitch mezzanine receptacle
The Molex 0513380974 is a 90-position receptacle from the SlimStack 51338 series, designed for board-to-board mezzanine stacking at a fixed 1.5 mm mated height. The 0.016" (0.40 mm) pitch packs 90 circuits into a two-row layout, which keeps the PCB footprint narrow but demands fine-line routing — expect trace/space widths below 0.20 mm on the mating pads.
1.5 mm stack height — fixed mezzanine gap
The mated stack height is a fixed 1.5 mm, set by the connector body height of 0.053" (1.35 mm) plus the mating interface. This suits ultra-thin assemblies where the PCB pair must sit close.
SMT termination with solder retention
Surface-mount termination with integral solder retention features — the part has small metal tabs that wick solder during reflow, anchoring the connector to the board pads. Tape & Reel packaging supports automated pick-and-place.