Can you please advise if the XC7K160T-2FF676I uses lead in the solder only, or is it used elsewhere?
I can see that it is not RoHS compliant.
Check package mdds for that sort of info. Yes, "FF" package will have lead in their solder bumps and balls. "FFG" is the lead free variant so if you want a RoHS compliant part then that's the one for you. See both mdds links below: