Ratings and what they mean
The 430451402: The 8 A per circuit headline rating is governed by the gold-over-brass contact pair and the LCP housing's 105 °C ceiling — derate above 105 °C per the product drawing. The split plating is deliberate: 30.0 µin (0.76 µm) gold on the mating face carries the plug's repeated mate/unmate cycles; 100.0 µin (2.54 µm) tin on the solder tail gives solderability and oxidation resistance at the PCB interface. The 600 V rating covers the standard AC mains and DC bus voltages common in industrial and telecom equipment — it is a dielectric withstanding rating, not a signal-level limit. The 0.290-inch (7.37 mm) insulation height and 0.125-inch (3.18 mm) post length define the through-hole footprint and the solder-fill requirement — the board layout must accommodate 3.18 mm tails with adequate annular ring for reliable wave or hand-solder joints.