Part number suffix -TS2490 vs -T or -T7A

Hello.  We are currently using the PN ISL28025FR12Z-T in production.  One of our supply sources have this part number, but with a supplemental suffix (ISL28025FR12Z-TS2490).  Now, I have seen both these PN listed in PCN 20029A and PCN21005, but I can't identify the exact difference between the -T and the -TS2490 suffix.  Is it for the packing/reel configuration only ?  I can see, in your Datasheet  ISL28025 the difference between "no suffix", "T" suffix and "T7A" suffix, but I can't find anything on the "TS2490" suffix.  Thanks for helping me on this, and have a nice day!