The Molex 430451208 is a 12-circuit, dual-row header from the Micro-Fit 3.0 43045 series. The 3.00 mm pitch provides enough creepage for the 600 V rating without forcing an oversized board footprint, while the gold-plated mating contacts (30.0 µin) handle repeated mating cycles without corrosion.
Tin-plated solder tails (100.0 µin) wet well with standard lead-free profiles, so no special paste or preheat is needed. Rated 8 A per circuit at 600 V, the limiting factor here is the contact temperature rise, not the contact itself — the LCP housing (UL94 V-0) handles the heat, but derate above 105 °C operating ambient.
The locking ramp clicks home and won't back out under vibration. Termination is solder-only — no press-fit option on this SMT variant.