What it is
The Molex 430450400 is the 4-position dual-row member of the Micro-Fit 3.0 43045 series — a board-to-cable header with 0.118 inch (3.00 mm) pitch, right-angle through-hole mounting, and the locking ramp that gives this family its vibration-resistant mate retention over friction-fit alternatives.
What the ratings mean
Where this class is used
Board-to-cable headers in this series see service in automotive, industrial automation, medical, and telecommunications equipment — generally as the PCB-side half of a harness connection where the wire side is a sealed or unsealed plug. The 600V rating provides headroom for control-power distribution; the operating window of -40°C to 105°C covers the full automotive and industrial temperature band.