What This Connector Is
The 79821-134HLF is Amphenol FCI's 34-circuit member of the BERGSTIK II dual-row header series, rated 5 A per contact at 0.100 inch (2.54 mm) pitch. The two rows are spaced 0.100 inch apart, the full 34 positions are loaded, and the push-pull fastening holds the mated pair without hardware. Gold-over-phosphor bronze contacts at 30.0 µin (0.76 µm) thickness give this header the durability for repeated mating cycles in board-to-board stacking. The 110 V rating suits signal and low-power distribution in industrial control and instrumentation.
Board Fit and Mating
Through-hole solder tails at 0.200 inch (5.08 mm) post length accept a standard 2.54 mm grid footprint. The unshrouded header mates with the matching BERGSTIK II receptacle housing — the push-pull latch provides retention without jack-screws. The 0.100 inch insulation height keeps the board-stack profile low.