Plating grade and what it means for the circuit
The 430451008: The mating side carries 30.0µin (0.76µm) gold over nickel; the solder tail carries 100.0µin (2.54µm) tin. The gold flash on the mating face handles the repeated plug/unplug cycles — the tin cap on the post handles solder thermal excursion and long-term atmospheric exposure. For a harness that stays mated after assembly, the tin post is the right choice; for anything going in and out in the field, check whether the gold thickness gives enough cycle life for your reconnect duty.
The 4-wall shroud and locking ramp
Four-wall shrouding with a locking ramp is the full keying and polarisation package — it keeps the matching Micro-Fit 3.0 plug housing from being forced in misaligned. If your harness uses a latching plug body rather than a friction-fit receptacle, the locking ramp engagement is what prevents vibration walk-out on the line.
Board-to-Cable fit — what this style means for the BOM
Style is listed as Board to Cable/Wire — that means this is the PCB-mount header half of a board-to-wire pair, not a board-to-board mezzanine. The SMT right-angle termination puts the mated interface parallel to the board plane; the board-lock feature is what anchors it to the PCB edge against vibration loading. Match this to the matching Micro-Fit 3.0 plug housing and crimp terminal for the complete harness segment.
Lifecycle and compliance
Product status is Active; ROHS3 Compliant. No EOL notice or successor order code identified. The operating range runs -40°C to 105°C and the insulation material is glass-filled liquid crystal polymer rated UL94 V-0 — fine for most industrial and automotive environments under the rated voltage and current.