What this connector is
The Molex 430451619 is a 16-position, dual-row Micro-Fit 3.0 surface-mount header with a 3.00mm pitch and a 4-wall shroud that guides the mating half and prevents mis-orientation in the harness. Gold on the mating interface (15.0µin) handles the plug's repeated cycles; the post side gets 100.0µin of tin for solderability and long-term board-level stability. The locking ramp on the header body mates with the matching plug's latch to hold the pair secure under vibration — a detail that matters in automotive and industrial harness assemblies where the connector is not in a protected enclosure.
Key ratings and what they mean for your BOM
The 8 A per circuit rating is the headline spec, but the split plating is the real selection driver: gold on the mating face (15.0µin / 0.38µm) versus tin on the solder post (100.0µin / 2.54µm).
Applications
Board-to-cable power and signal distribution in automotive, industrial, medical equipment, and telecom harness assemblies. The SMT footprint and the solder-retention feature make it a board-header in a cable-to-board harness pair rather than a free-hanging in-line plug — the harness side uses the matching Micro-Fit 3.0 receptacle housing with crimp terminals to accept the wire.