Low Ohmic PTC Resettable Fuses MF-PSML Series

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The MF-PSML Series has post trip resistance values as low as 25 mOhms and initial resistance values as low as 3 mOhms. Such low resistance values are also helping to boost the current carrying capability of these new
devices. Using Model MF-PSML350-2, Bourns can now achieve a 3.5 A Ihold in an 0805 package.

The compact MF-PSML Series uses Bourns’ freeXpansion™ design which increases the performance of the resettable fuse over conventional designs, with higher hold currents, higher voltages, improved resistance stability and smaller footprints.


  • Small footprint size (0805) and low profile for space-constrained mobile applications
  • Ultra-low resistance
  • Symmetrical design
  • Surface mount packaging for automated assembly
  • RoHS compliant and halogen free


  • USB port protection
  • HDMI 1.4 Source protection
  • PC motherboards 
  • Mobile phones
  • PDAs / digital cameras
  • Bluetooth® earphone power protection
  • Game console port protection