Board-to-Board Mezzanine Plug for Tight Stack Heights
The Hirose DF40JC-10DP-0.4V(53) is a 10-position plug from the DF40 series, designed for board-to-board mezzanine stacking. It uses outer shroud contacts on a 0.016" (0.40mm) pitch in two rows, with a mated stacking height of 2mm — a common spacing for compact portable electronics where the PCB gap is tight. The connector is surface-mount and carries gold-plated contacts with a 2.00µin (0.051µm) finish, suited for moderate mating-cycle duty in controlled environments.
Sizing the Board Gap and Footprint
At 0.045" (1.14mm) above the board, the plug sits low enough to allow airflow or component placement on the underside of the top board.
It is RoHS compliant. No official cross-reference or direct second-source is documented, but the DF40C-10DP-0.4V(51) shares the same pitch, position count, and stack height — verify the mating interface compatibility with your receptacle before substituting.
Mating and Compatibility Notes
The DF40C-10DP-0.4V(51) is a functional peer with the same pitch, height, and position count, but includes solder retention features — check your receptacle's mating face geometry before swapping.