The 9-146261-0-13: The unshrouded design keeps the insulation height at 0.090" (2.29 mm), which gives a low profile for board-to-board stacking where z-height is tight.
Breakaway header flexibility
That part is better suited for cable-to-board applications where polarisation and contact protection matter, but it carries only 4 positions and a different row spacing of 0.130" (3.30 mm). For a 26-position unshrouded board-to-board or cable application, 9-146261-0-13 is the direct fit.
