The SMD1812B160TF-8(4L) is a PTC resettable fuse manufactured by Yageo. This device is part of Yageo's SMD series of surface mount devices and is RoHS compliant. It has an 8(4L) footprint, which means that the device is 8 mm in diameter and has 4 vertical leads. This device has a rated current of 160mA and a rated voltage of 60V. It is designed to protect sensitive electronic circuits from overcurrent and short circuits, and will automatically reset after a fault condition has been cleared.