Difference Between 531Z104KTR16T and 531Z104KTR16T

Are there any differences between the 531Z104KTR16T and 531Z104KTR16T part numbers from American Technical Ceramics? These are the same part. There are several ordering codes available for this part that can be used at Digi-Key, including:
1284-531Z104KTR16TTR
531Z104KT16T
531Z104KTR16T\15000
531Z104KTR8

There are no physical/electrical differences between the ordering numbers.

If you have any additional questions, feel free to leave a reply.