What it is and where it sits in the series
The Molex 430451412 is the 14-circuit member of the Micro-Fit 3.0 43045 dual-row header family. Board-to-cable orientation, fully loaded (all 14 positions populated), through-hole kinked-pin solder tails for mechanical retention in the PCB — the kinked pin resists vibration pullout better than a plain straight-tail header. The 4-wall shroud and locking ramp give it the keyed, latching engagement expected of a power-interconnect header in harness assemblies.
Ratings that drive the selection
The 3.00 mm pitch and dual-row layout match the 14-position count — verify the BOM position count matches 14 circuits and confirm the row spacing is 0.118" before committing. 8 A per circuit at 600 V gives a healthy power envelope — the voltage rating covers most industrial and automotive配电 buss connections at the harness level. The tin plating at 100 µin (2.54 µm) on both the mating face and the solder post is the standard mid-cycle tin grade: it will handle dozens of mate/de-mate cycles but is not the gold-grade option for high-reconnection field-service use cases where the 100 µin build would still limit cycle life relative to a thicker or precious-metal plating callout. −40°C to 105°C operating range with UL94 V-0 housing material puts this squarely in industrial and automotive instrument-panel and under-hood harness territory where thermal cycling and flammability compliance are requirements — the LCP glass-filled insulator holds up to the temperature without the吸水 issues of some lower-grade polymers at the high end of the window. Insulation height of 0.390" (9.91 mm) and post length of 0.125" (3.18 mm) are the stack-height and coplanarity numbers the PCB layout engineer needs — the board guide feature on the shroud helps align the mating receptacle during assembly but does not change the z-height budget.
What it mates with
As a male header, it mates with the matching Micro-Fit 3.0 43045 female receptacle housing and its associated crimp terminal. The locking ramp on the header engages the primary latch on the receptacle housing — confirm the harness BOM calls out the mating half by its own Molex order code.