The +C3 suffix on Panasonic Capacitor 25SEPF56M+C3

What is the difference between 25SEPF56M and one adding a +C3 suffix, like 25SEPF56M+C3?

The +C3 is a Lead Terminal Cutting code. It means both leads will be cut to the same length of 3.5mm with a tolerance of +/- 0.5mm.

Click here for the datasheet with this information.