Position Count vs. Sibling Alternatives
The 20-position variant (1-534237-8) sits at the high end of the single-row AMPMODU Mod IV socket range — the closest active siblings are 15-position (1-534237-3), 14-position (1-534237-2), and 13-position (1-534237-1), all sharing the same 0.100" pitch, gold plating, and black polyester housing.
Push-pull fastening type — mates with AMPMODU Mod IV or compatible 0.025" square-post headers. The 0.340" (8.64 mm) insulation height provides clearance for wire-wrap or board-stacking applications where the receptacle sits above the PCB. Board-to-board or cable style — the receptacle accepts either a mating header soldered to a second board or a pre-wired cable assembly with crimped square-post contacts.