Board-to-Board Mezzanine Receptacle, 21 Positions
It uses a 0.039" (1.00 mm) pitch in a 2-row layout, surface-mounted with outer shroud contacts. The 0.129" (3.28 mm) height above board is the un-mated profile; once paired with the matching header, the mated stack height can be one of five values — 4.15 mm, 4.5 mm, 5 mm, 6 mm, or 7 mm — depending on the header height selected. This is a one-time-stack connector: gold flash contacts handle the few mating cycles during board assembly and test, but it is not built for repeated field disconnect.
Stack Height Selection and Footprint
The 10162581-3134121LF accepts five stack heights — 4.15 mm, 4.5 mm, 5 mm, 6 mm, and 7 mm — which means the same receptacle can be paired with different header heights to fit various z-axis board spacings. Board guide and pick-and-place features are built in, which helps with alignment during automated assembly and keeps the part centered during reflow.
Position Count Variants in the Same Footprint
The 21-position 10162581-3134121LF is one of several position-count variants sharing the same 0.039" (1.00 mm) pitch, 2-row layout, and 0.129" (3.28 mm) height. A 31-position variant (10162581-3134131LF) also exists.
The base product number is 10162581.