The 10119109-326014LF: Mating contacts carry 50.0 µ" (1.27 µm) gold plating over a copper alloy base, rated for repeated insertion cycles in board-to-board stacking.
The 26-position 10119109-326014LF sits between the 24-position and 30-position variants in the BERGSTIK II 10119109 series.
