330 µH shielded drum core — DC-DC filter fit
The Coilcraft LPS5015-334MRC is a 330 µH shielded drum core inductor in the LPS5015 series, built for surface-mount power filtering and energy storage in DC-DC converters. The ferrite core and shield contain the magnetic field, reducing radiated EMI that couples into adjacent traces or sensitive analog stages. Rated current is 170 mA, with saturation current specified at 150 mA — the inductor's usable DC load sits just below the saturation knee. A 7.4 Ohm maximum DCR means the DC copper loss at full rated current is roughly 0.21 W, which the 1.5 mm seated height and nonstandard package must dissipate without exceeding the 125°C top-end operating limit.
Board-fit constraints — footprint and clearance
The nonstandard case means the PCB layout should follow Coilcraft's recommended pad geometry rather than a generic 5 mm x 5 mm footprint, since the termination pads may be smaller than the body outline. Self-resonant frequency is 5.7 MHz, measured at 100 kHz test frequency. For a buck converter switching at 500 kHz to 1 MHz, the inductor's impedance stays inductive well above the switching harmonic content, so the filter behaves as designed without parasitic capacitive coupling at the switching edge.
Temperature grade and operating life
The ferrite core's permeability stays stable across this range, though DCR increases with temperature — the 7.4 Ohm max is specified at 25°C; expect roughly 10% higher DCR at 125°C.