Comparing the 77313-127-10LF with the 77313-118-10LF
Both are 10-position, 2-row, unshrouded BERGSTIK® headers with identical pitch, current rating, and gold mating finish. The difference is the overall contact length: the 77313-127-10LF measures 0.465" (11.81mm) versus 0.450" (11.43mm) for the 77313-118-10LF. The extra 0.015" comes from a longer mating pin (0.260" vs 0.230") — relevant if the mating receptacle has a deep cavity or if the board stack-up needs more pin protrusion.
