The Hirose DF9B-41S-1V(69) is a 41-position receptacle with outer shroud contacts from the DF9 series, designed for parallel board-to-board stacking at a 1.00 mm pitch. The dual-row layout and 4.3 mm mated stacking height suit it for mezzanine interconnects where z-axis clearance is tight — think handheld devices, display modules, or compact sensor boards. Gold-plated contacts at 8.00 µinch on the mating side handle moderate-cycle signal duty without the fretting risk of tin in low-insertion-force designs.
The 4.3 mm stacking height sets the gap between the two parallel boards when mated with the corresponding DF9 series pin header.
Contact Plating and Signal Duty
The receptacle uses outer shroud contacts, meaning the mating interface is protected by the housing shroud, which reduces the chance of bent pins during blind mating.
Against the DF9B-31S-1V(69) at 31 positions, this 41-position variant adds 10 signal lines at the same 1.00 mm pitch and 4.3 mm stack height — the board footprint scales linearly with position count. The DF9B-41S-1V(32) shares the same 41-position layout but uses tin contacts (39.4 µinch) instead of gold; the gold-plated (69) suffix is the choice for applications requiring lower contact resistance over more mating cycles.