Parametric profile and BOM-fit note
The LBC2518T3R3M is a drum-core, wirewound inductor in Taiyo Yuden's LB, C Type series, offering 3.3 µH inductance with ±20% tolerance. Rated for 560 mA continuous current with a maximum DC resistance of 208 mOhm — the DCR sets the I²R heating floor, so at full rated current the self-heating is about 65 mW, well within the 105°C operating ceiling. Unshielded construction means the magnetic field extends beyond the core; adjacent traces or components on the same 1007 (2518 Metric) footprint may couple noise if placed inside the fringing field. Self-resonant frequency is 54 MHz, tested at 7.96 MHz — above SRF the inductor behaves capacitively, so the usable bandwidth for filtering or DC-DC output ripple is well below 54 MHz.