Board-to-Board Stacking with 2.00 mm Pitch
The 1-2307817-0: The 0.177" (4.50 mm) insulation height sets the z-height budget above the board surface.
Gold Contacts and 2 A Signal-Duty Rating
SMT Assembly and Pick-and-Place Ready
The bottom or top entry design means the same part can be loaded from either side of the board, simplifying the pick-and-place program. The 2.00 mm row spacing matches the mating pitch, so the footprint is a 2×5 grid with 2.00 mm between rows.
The key difference for a buyer cross-shopping: 1-2307817-0 uses 2.00 mm pitch with gold mating finish (better for corrosive environments and higher cycle life), while 1-2823056-2 uses 2.54 mm pitch with tin contacts (lower cost, fewer mating cycles). The 10-position vs 12-position count also affects the board footprint.