What the 430451429 Is
Ratings That Drive the Fit Decision
Pitch is 0.118 inch (3.00 mm) on both row and mating axes — the dual-row spacing of 0.118 inch (3.00 mm) confirms the square-grid footprint, which means the board keep-out and via pattern match the rest of the 43045 series. The 8 A per circuit headline rating is governed by the brass contact material and the 105 °C upper operating limit — above 105 °C the current must be derated per the product drawing. Voltage at 600 V is well above most board-level power rails, so voltage is not the limiting selection factor here. The 4-wall shroud and locking ramp together provide positive retention that survives the vibration profiles typical in automotive under-hood and industrial machinery environments. The board guide feature aligns the mating connector during blind-mate or stacked-board assembly — it removes lateral shear from the pin field before the latch engages.
What This Connector Is Used For
The Micro-Fit 3.0 43045 header series targets board-to-cable power distribution in enclosed, thermally challenging environments. The 430451429 specifically serves applications in automotive, industrial automation, medical equipment, and telecommunications — environments that demand the -40 to 105 °C operating window, UL94 V-0 flammability rating, and the retention security of the locking ramp. The 4-wall shroud and square pin geometry also make it suitable as a panel-mount pass-through header where the cable side mates into a harness receptacle.
Compliance and Material Ratings
The insulation body is glass-filled liquid crystal polymer (LCP) rated UL94 V-0 — the highest flammability classification — which satisfies most enclosedequipment fire-retardation requirements without a secondary flame barrier. Operating temperature spans -40 to 105 °C, consistent with automotive interior and engine-adjacent applications. All contacts are brass-based; the mating-side gold thickness of 30.0 µin (0.76 µm) is sufficient for repeated mating cycles in the field.