The SMD1812P010TF with PTC Resettable Fuses 1812 RoHS is an electronic component that is a type of surface mount device, or SMD, manufactured by Ruilongyuan. It is a resettable fuse that is 1812 (about 4.6 × 3.2 mm) in size, has a resistance of 10 ohms, and is RoHS-compliant. This fuse offers overcurrent protection for small electronics, and it is resettable, meaning that it can be automatically reset when the current is returned to its normal level after an excessive current has occurred. This makes it ideal for applications that require frequent or quick recovery from overcurrents.