The UPZ2012D101-4R0TF is an 0805 size surface mount ferrite bead made by Sunlord. This component uses three components to offer high impedance at 100MHz, namely a ferrite core, a capacitor, and a resistor. It has a 100 ohm impedance and is RoHS certified. This type of ferrite bead is primarily used for filtering out high-frequency noise or signals, often in automotive, industrial, consumer, computing, and communication applications.