The Amphenol BERGSTIK® II 78511-128HLF is a 28-position, single-row, unshrouded through-hole header on the standard 0.100" (2.54 mm) pitch. It carries male square pins with a gold or GXT™ mating finish at 30.0 µ" (0.76 µm) thickness, rated for 5 A per contact at 110 V. This is the high-density end of the BERGSTIK II single-row family — 28 circuits in one row means the board edge needs the full length, but you get a compact footprint for the circuit count.
The 0.100" pitch matches standard BergStik receptacles and 0.100" IDC connectors.
Against the 3-position 68024-103HLF in the same BERGSTIK II single-row family, the 78511-128HLF carries 28 positions at the same 0.100" pitch, same 5 A rating, same 30.0 µ" gold plating, and same UL94 V-0 LCP housing. The difference is purely the position count — 28 circuits vs 3 — so the board footprint scales linearly.
No end-of-life notice or successor is on record. For a production BOM, the position count, pitch, and gold plating match the listed series; confirm the mating receptacle half before committing the line.