The Amphenol ICC 79425-124HLF is a 24-circuit unshrouded square-pin header in the BERGSTIK II series, configured as a 2-row board-to-board interconnect with a 0.100-inch (2.54 mm) pitch and through-hole push-pull termination. Gold or Gold GXT contact plating at 30.0 µin (0.76 µm) on the mating face delivers durability suited to repeated plug cycles, and the UL94 V-0 black housing meets the flammability requirement for enclosed equipment. At 5 A per contact and 110 V, the 79425-124HLF carries enough current for power distribution at the board level while the 24-position dual-row footprint keeps the board footprint compact. The phosphor-bronze contact substrate provides good spring-back for repeated mating without fatigue failure.
Plating grade and what it decides
The contact finish reads Gold or Gold GXT at 30.0 µin (0.76 µm) on the mating side — the GXT variant refers to Amphenol's gold-flash overlay that resists fretting wear in vibration-prone environments. Phosphor bronze substrate under the gold gives the contact beam its spring — it holds contact normal force better than brass over many cycles, which matters in any harness that sees vibration or thermal cycling.