Alternate Name for MOLEX 22-16-2110

If you’re searching for 22-16-2110-P, a rectangular headerfrom MOLEX, you may end up finding the product 22-16-2110, instead. What does the -P indicate, and what does its lack mean?

The “-P” is an older callout indicating that the part was pick and place capable.

There is no difference anymore and it is just an alternate name for the same product. Digi-Key has thus added the 22-16-2110-P as a variant of this part number