The Hirose DF23C-10DS-0.5V(51) is a 10-position receptacle with center strip contacts, part of the DF23 series of board-to-board connectors. The 1.45mm height above board and 1.5mm mated stacking height define the z-axis clearance for mezzanine stacking.
Mated Height and Board Stacking
The mated stack height is 1.5mm, with the receptacle itself sitting 1.45mm above the board surface. That 0.05mm difference is the clearance for the mating plug's shroud to engage — tight enough that the board-to-board spacing is effectively the receptacle height plus the plug's profile. For a 0.50mm pitch mezzanine, this is a low-profile interconnect suited for handheld or portable device PCBs where every millimeter of z-height is accounted for.
Mating Half and Position Count
This receptacle mates with the DF23C-10DP-0.5V(91) or DF23C-10DP-0.5V(92) plug, both 10-position, 0.50mm pitch surface-mount connectors with outer shroud contacts and gold finish. If the design needs more I/O, the 20-position sibling DF23C-20DS-0.5V(51) shares the same 1.45mm board height and 0.50mm pitch but doubles the channel count.