40-position, dual-row 2.54 mm pitch header for cable-to-board interconnects
The latch lock with short eject hooks secures the mated pair against accidental disconnection under vibration, and the keying slot prevents incorrect insertion of the mating housing — a practical safeguard in multi-connector panels.
Mounting flanges on each end provide additional mechanical retention to the PCB — useful when the cable assembly exerts shear or tensile loads on the header.
Packaged in bulk, which suits high-volume assembly lines that feed headers into wave-solder or selective-solder processes.
Comparison with peer 1379030-3
For a 40-position vertical header with gold mating contacts, the 5499910-9 is the correct choice.