The BLM15AG121SN1D is a Ferrite Beads 120 OHM LOW SPEED SI component manufactured by Murata. It is a small, passive, low impedance resistance component, commonly used for filtering High Frequency (HF) signals. It is used to provide both AC and DC signal filtering and inductive isolation. This component can be used in a wide range of applications, such as signal conditioning, antenna, power line, and communication system. The bead size is 0806 (2.0x1.25mm). The bead impedance is 120 O (+/- 10%). The total DC resistance is 400mO and the capacitance is 4pF (+/- 15pF). Additionally, the current handling capability is 0.12A and the DC resistance variation is 17%. The operating temperature range is -55 to 125 C.