The Amphenol FCI BERGSTIK II 93939-426HLF is a 26-position, dual-row unshrouded header on the standard 0.100-inch (2.54 mm) pitch. The contacts are tin-plated phosphor bronze, rated 5 A per circuit at 110 V, with a 100.0 µin (2.54 µm) tin finish on the mating surface.
The dual-row layout with 0.100-inch (2.54 mm) row spacing means the 26 positions occupy a 13 x 2 hole pattern that matches standard 0.100-inch IDC ribbon-cable receptacles and many generic wire-to-board housings.
At 110 V, the 0.100-inch pitch provides adequate creepage for signal-level voltages in dry indoor environments.
Board-to-board use
The listed style is Board to Board, and the 0.160-inch (4.06 mm) mating pin length gives enough engagement depth for standard 0.100-inch pitch receptacles. The right-angle orientation limits this to mezzanine or perpendicular stacking — the header sits on one board and the mating receptacle on a parallel or perpendicular board, with the mated height determined by the receptacle's insulation height.