The Molex 397000303 is a member of the Series * interconnect family. As a Series * component, it is designed for use in wire-to-board or board-to-board applications where a reliable, field-proven connection is required. The part ships in Box packaging, which is a bulk format suited for hand-loading or low-to-medium volume assembly lines — not tape-and-reel for automated pick-and-place. Confirm the position count and pitch from the series datasheet to match your BOM line.
The only difference between the 397000303 and the alternate 39700-0303 is the order code itself — the Series *, packaging, and lifecycle are identical. There is no functional delta in pitch, circuit count, current rating, or mating interface. For procurement, this means either MPN can be used as a drop-in replacement on the AVL without requalification.