What This 34-Position Dubox™ Receptacle Does in the Assembly
The 71966-303LF is a 34-position female socket header from the Dubox™ series, with 30 positions loaded — four positions are left open, which can be used for keying or omitted for routing flexibility. Through-hole mounting gives it a solid mechanical hold on the PCB — important when the mating half is a cable assembly that gets flexed or pulled.
Pitch, Pin Count, and Footprint Fit
With 34 positions total and 30 loaded, the PCB footprint has four empty through-holes; check your mating header's pin count to confirm alignment. The 0.276" (7.00mm) insulation height leaves room for routing under the connector body, and the 0.116" (2.95mm) post length gives a solid solder joint through the board.
How It Compares to Nearby Dubox™ Siblings
The 71991-316LF is a 32-position (all loaded) Dubox™ receptacle with a taller 11.04mm body and longer 0.118" (3.00mm) post — same 0.100" pitch, same 30 µinch gold mating finish. If your board has a tighter z-height budget, the 71966-303LF's 7.00mm insulation height is the lower-profile choice. The 95264-301LF is a 20-position (16 loaded) variant with 29.5 µinch gold — nearly identical plating, fewer circuits.