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This is the popular RS-485 module found in the market, how can I identify the polyfuse/heat recovery fuse in it? Also its manufacturer or electrical ratings?

photo of RS-485 module

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    \$\begingroup\$ Might be Bourns \$\endgroup\$
    – Andy aka
    Oct 29, 2020 at 10:25

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Could be Bourns MF-MSMF Series, specifically MF-MSMF010

Mouser link

60V DC Max
100mA Hold
300mA Trip

Part Marking

MF-MSMF Series Datasheet

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