0.40mm Pitch, 60-Position Mezzanine Receptacle — 2mm Stack Height
The Hirose DF40C(2.0)-60DS-0.4V(51) is a 60-position receptacle from the DF40 series of board-to-board mezzanine connectors. It uses a 0.016" (0.40mm) pitch dual-row layout with center strip contacts, designed for parallel PCB stacking at a mated height of 2mm.
60 vs 70 Positions — Same Footprint, Different Circuit Count
The DF40C(2.0)-60DS-0.4V(51) shares the same 0.016" (0.40mm) pitch, 2mm mated stack height, and gold contact finish with the 70-position DF40C(2.0)-70DS-0.4V(51). Choose the 60-position variant when the BOM calls for exactly 60 signal lines; the 70-position sibling covers a higher-density routing need at the same z-height.
Surface-Mount Termination — Fine-Pitch Soldering Required
This receptacle is surface-mount only, with no through-hole retention. The 0.40mm pitch demands a precise solder paste stencil and reflow profile — standard wave-solder processes will bridge the fine-pitch contacts. Alignment features on the connector body help register the pair during assembly, but the fine pitch leaves little room for misalignment.