The Amphenol FCI 79425-148HLF is the 48-circuit member of the BERGSTIK II series — a dual-row, unshrouded board-to-board header intended for through-hole soldering on 2.54 mm (0.100 inch) pitch. Square pins mate with the matching BERGSTIK II receptacle, and the push-pull fastening type relies on friction and pin engagement rather than a locking latch. Contact material is phosphor bronze with gold or Gold GXT plating at 30.0 µin (0.76 µm) on the mating surface. The housing is rated UL94 V-0.
Ratings that drive the fit decision
What the BERGSTIK II is for
Board-to-board stacking header for general industrial and commercial equipment — the 0.100 inch pitch and dual-row format have been a fixture in backplane and midplane daughter-card assemblies for decades. The unshrouded pin field accepts the matching receptacle housing; without a shroud the keying and polarisation depend entirely on the housing design and any board-keying features. UL94 V-0 rating means the housing material meets the flammability threshold for enclosed equipment compartments.