Contact system and board fit
The 87527-3 is the 3-position member of TE's AMPMODU Mod II unshrouded header line, mating with standard 0.025" square receptacle contacts.
Position count across the series
Within the AMPMODU Mod II family the 3-position 87527-3 sits below the 6-position 1394090-1 (shrouded, right-angle, 2.85 mm pitch, tin contacts) and the 4-position 1-1871673-2 (shrouded, dual-row, 2.50 mm pitch, board lock, tin contacts) — pitch, shrouding, and contact plating differ across the series, so the selection matches the mating half's position count and the required retention feature.