If you are looking to understand the difference between KYOCERA AVX capacitor part numbers 600S1R6BT250XT and 600S1R6BT250T, please refer to the information below, provided by the manufacturer:
These are two distinct part numbers. The only difference between them is that one includes laser marking, while the other does not.
Per the 600 series datasheet, the ‘X’ parts are laser marked while the non-X are not.
For more details on laser marking, please refer to the document below:
Laser-Marking-of-KYOCERA-AVX-Capacitors.pdf (155.9 KB)
Applicable Part Numbers
1284-1366-2-ND
600S1R6BT250XT
1284-1366-1-ND
ATC600S1R6BT250XT
600S1R6BTDRN
600S1R6BT250XT\500
1284-1366-2
600S1R6BT
1284-1366-1
1284-1366-6
600S1R6BTDRB
600S1R6BT-ND
1284-1366-6-ND