The Molex 510151200 is a member of the * series, an interconnect component line from Molex. The series designation is the primary identifier for sourcing and matching the correct mating half. This part is packaged in Box format, which is the standard bulk packaging for this type of connector.
Cross-Reference Note
The alternate MPN 51015-1200 is a direct functional equivalent, sharing the same * series, Box packaging, and Active lifecycle status. When sourcing 510151200, the 51015-1200 can serve as a second-source option on the BOM — confirm the position count and mating half match your assembly.