Tantalum Cap Code Explained
Here is what I found after doing a quick search online:



Furthermore, you can look at the following link to find more information about their device marking and the R+ at the top of the Capacitor.  

Kemet Capacitor Marking

Initially, what threw me off was the date code located at the bottom.  I thought this would represent the ESR (Equivalent series resistance) of the capacitor.  

In the end, it seems like the capacitor is rated for 20V which makes very little sense for the application you have at hand.  Therefore, it would probably be a good idea to review the design and possibly thinking about adding some Galvanic isolation to prevent further damage to the system due to ESD.