What it is and where it sits in the series
The Molex 430451623 is the 16-circuit member of the Micro-Fit 3.0 43045 series — a dual-row 3.00 mm pitch header designed for board-to-cable power and signal distribution. The right-angle through-hole body carries a full 4-wall shroud and a locking ramp, which locks the mating receptacle housing positively before the primary latch engages. All 16 positions are loaded with brass male pins, and the board-lock feature anchors the header to the PCB during wave solder to prevent coplanarity lift.
Key ratings and what they mean for your BOM
Lifecycle and compliance
The 430451623 is Active and ROHS3 Compliant — procurement can carry it on the BOM without a last-time-buy watch. No official successor or cross-reference is listed for this MPN; the series base number 043045 identifies the family for alternates if a second source is required. The ROHS3 status is on record; if the build carries a REACH or UL requirement, confirm against the full product drawing before committing.
What the 430451623 does not do
This is a male pin header — it does not accept a female terminal. It is right-angle through-hole only; there is no vertical or SMT variant of this exact MPN on record. At 8 A per circuit the header is rated for power duty, but the 3.00 mm pitch means the contact current density at full load is high relative to larger-pitch headers — verify thermal rise at the header body under worst-case ambient before using all 16 circuits simultaneously at elevated temperature.