The Amphenol FCI (FCI, now Amphenol) BERGSTIK II 79425-464HLF is a 64-position dual-row board-to-board header in the 0.100-inch (2.54 mm) pitch family. The two rows are spaced 0.100 inch apart, matching the standard 2.54 mm grid so the footprint drops onto most through-hole layouts without custom pad geometry. Square phosphor bronze pins enter the board on 0.120-inch tails and carry 5 A per circuit at up to 110 V — a combination that covers low-level signal and moderate power in a single header without splitting the BOM between a signal header and a power latch. The mating face and solder tail are both tin-plated at 100 µin (2.54 µm), which is the durable finish for applications where re-mating cycles are occasional rather than frequent. Push-pull fastening holds the header in its receptacle without jack-screws or locking clips, making it suited for panel-internal board-to-board joins where tooling is limited. The housing is black nylon rated UL94 V-0, so it can be specified inside enclosed equipment that needs to meet flame-retardancy requirements.
Where the ratings land for a BOM decision
What the series delivers and what it does not
BERGSTIK II is the Amphenol FCI dual-row through-hole header series built on the 0.100-inch pitch grid. The series covers a range of position counts, and the 79425 base number in the MPN signals the 64-position member. The push-pull fastening is the series standard — it requires a matching BERGSTIK II receptacle with a friction-lock feature.