What it is
The Molex 430450816 is the 8-circuit member of the Micro-Fit 3.0 43045 series — a dual-row, board-to-cable SMT header with a 0.118" (3.00mm) pitch and square male pin contacts. The header is fully shrouded on all four walls with a locking ramp on the housing face that latches into the matching receptacle for vibration retention. A board-lock feature on the termination side anchors the header to the PCB during wave or reflow solder assembly, reducing mechanical stress on the solder joints in environments subject to shock and vibration.
Key ratings and what they mean for your fit
8 A per circuit at up to 600 V makes this suitable for power distribution nodes within a harness assembly — not just signal. The current rating is per-contact and consistent with the Micro-Fit 3.0 family across circuit counts, so the 8-position version carries the same current ceiling as its larger siblings. The contact plating split is the most procurement-relevant detail on this part. The mating interface uses 15.0µin (0.38µm) gold over nickel — that grade of gold flash is appropriate for the repeated plug/unplug cycles that a board-to-cable header typically sees in the field. The solder-post side uses 100.0µin (2.54µm) tin plating, which wets reliably during SMT reflow and resists whisker growth over the product's operating life. The 0.118" (3.00mm) pitch matches the full Micro-Fit 3.0 footprint — the 43045 series shares its pitch with the 43045 panel-mount and cable-mount members, so a single board footprint accepts multiple connector types across the series. Operating range is -40°C to 105°C, with the insulation body rated UL94 V-0. The LCP glass-filled housing handles the thermal cycling found in automotive engine-bayadjacent modules and industrial enclosure interiors.
Where this class of connector is used
Board-to-cable headers in the Micro-Fit 3.0 family appear in harness assemblies across automotive instrument clusters, industrial automation controllers, medical diagnostic equipment, and telecom edge nodes — any application that routes power or low-speed signal from a PCB to a detachable cable harness and requires both vibration retention and field serviceability.
Sourcing and lifecycle
Product status is Active and the part is ROHS3 compliant — no lifecycle watch flags are present in the record. Sourced to order against the BOM quantity; confirm the SMT pad footprint matches your board layout before committing. The board-lock feature constrains the recommended paste mask and board finish — check the product drawing for the specific paste-to-mask opening if you are specifying a lead-free reflow profile.