MF-PSML Multifuse® PTC Resettable Fuses Bourns MF-PSML Multifuse® PTC Resettable Fuses are low ohmic resettable fuses in a small 0805 surface-mount package. These fuses offer post trip resistance values as low as 25mΩ and initial resistance values as low as 3mΩ. Bourns MF-PSML fuses can achieve a 3.5A hold current in an 0805 package. These fuses feature Free Xpansion Design™ technology to increase the performance over conventional designs. Applications include PC motherboard port protection, USB, memory modules, and wearable devices.