33 µH shielded inductor with AEC-Q200 qualification
The Coilcraft LPS3015-333MRC is a 33 µH shielded power inductor in the LPS3015 series, rated for 480 mA continuous current with a DCR of 1.3 Ohm max. The shield construction contains the magnetic field, reducing radiated EMI that could couple into nearby traces or components on a dense PCB — a consideration for power rail filtering in engine control units or sensor modules where layout space is tight.
Current rating and saturation margin
The 480 mA current rating is the thermal DC current that raises the part temperature by 40°C from ambient at 25°C. The saturation current (Isat) is 420 mA, meaning the inductance drops by 10% at that current — design the load so the peak current stays below Isat to avoid a sudden inductance collapse that could push the ripple current higher than the output capacitor bank can absorb. The 23 MHz self-resonant frequency sets the upper frequency limit for filtering; above that the inductor behaves capacitively.
Temperature range and qualification
AEC-Q200 qualification means it passed the passive-component stress tests for thermal shock, vibration, and solder heat resistance — a requirement for Tier-1 automotive BOMs and a strong indicator of field reliability in high-vibration environments.