What is the difference between -EF and EFR ending

------Question for NLCV32T-6R8M-EFR Please Put your question below------

Hello @r.knopf

Welcome to DigiKey TechForum.
Please see the differences between the products in the following link from the manufacturer’s website:
Products Comparison | Inductors (Coils) - SMD / SMT Inductors (Coils) | TDK Product Center