Below is a part number breakdown and part marking information for the MF-NSML Series and MF-PSML Series of resettable fuses from Bourns.
This is very similar to the Part Numbering and Markings on the MF-PSML Series below.
MF-NSML P/Ns
MF-NSML150-2 MF-NSML175-2 MF-NSML190-2 MF-NSML260-2 MF-NSML300-2 MF-NSML350-2 MF-NSML380-2 MF-NSML450-2 MF-NSML200-2 MF-NSML500-2 MF-NSML400-2
MF-PSML P/Ns
MF-PSML200-2 MF-PSML175-2 MF-PSML150-2 MF-PSML110-2 MF-PSML350-2 MF-PSML300-2 MF-PSML260-2