The MAX5859EXW contains lead and was not upgraded to lead free/RoHS compliant part.
Users in on-going production with the MAX5858EXW should submit a request for a quote online. There will likely be a minimum order qty (MOQ) and the part will include a -D at the end to denote it ships in a dry pack due to the fact that it is not MSL1.
NOTE: Parts rated MSL2 through MSL7 require dry pack at shipping.