68 µH, 140 mA — the DC bias and loss trade-off
The LBC2518T680MV is a wirewound unshielded inductor from Taiyo Yuden's LB, C Type series, rated at 68 µH with a ±20% tolerance and a 140 mA current rating.
Self-resonant frequency and unshielded construction
The self-resonant frequency is 9.5 MHz — above this the inductor's parasitic capacitance dominates and the impedance drops, so the part is suited for DC-DC converters and filter stages switching below that ceiling. The unshielded construction means the magnetic field radiates; keep sensitive analog traces or high-impedance nodes at least a few millimeters away from the body.
NRND — sourcing posture for this inductor
No official successor order code is recorded, so the 68 µH, 140 mA, 1007 footprint parameters define the replacement search.