330 µH shielded drum-core inductor for automotive and industrial DC-DC
The Coilcraft LPS4018-334MRC is a shielded drum-core power inductor in the LPS4018 series, delivering 330 µH ±20% inductance with a rated current of 170 mA and a saturation current of 180 mA. The shielded construction contains the magnetic flux, reducing radiated EMI into nearby traces or components — a practical advantage when the inductor sits next to a switching regulator or a sensitive analog front-end.
Footprint and integration constraints
Surface-mount on a nonstandard case — the pad layout matches the Coilcraft LPS4018 footprint; the 5.9 Ω maximum DCR means the I²R loss at 170 mA is about 170 mW, so the inductor runs warm but stays within the ferrite core's temperature rating under normal convection. The self-resonant frequency of 5.5 MHz sets the upper limit for the switching frequency in a buck or boost converter — above that the inductive impedance drops and the part behaves capacitively.