we could only help to provide this alternative to part
MCZ2010AH900L4TA0G as CMC 100MA 4LN 90 OHM SMD from TDK Corporation, for our customers:
EXC-18CS900U as CMC 100MA 4LN 90 OHM SMD ESD from Panasonic Electronic Components.
Please review the datasheets to ensure the alternative will work for your application.