The MF-MSMF050/40X-2 is a PTC resettable fuse from the Bourns MF-MSMF series, designed for overcurrent protection in a surface-mount package. It features a hold current of 0.50A and a trip current of 1.00A at 23°C. This fuse is rated for a maximum voltage of 15.0V and can handle a maximum fault current of 100A, with a typical power dissipation of 0.8W. As an AEC-Q200 compliant and halogen-free component, it is ideal for automotive electronics, hard disk drives, PC motherboards, and USB port protection.