Hi Snow_Owl
X suffix is not listed in the datasheet, which is a packaging suffix referencing a 7’’ manufacturer reel, which for this part contains 3,000 pieces.
-As always, if ordering Cut Tape quantity from DigiKey a reel will not be provided, unless purchasing a Digi-Reel or the full manufacturer reel quantity.
Source:
Common Nexperia Suffixes; Suffix Letter Codes Datasheet