{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LPS4018-474MRC","brand":"Coilcraft","brandSlug":"coilcraft","productSlug":"LPS4018-474MRC","canonicalUrl":"https://icboms.com/coilcraft/LPS4018-474MRC","factsUrl":"https://icboms.com/api/mcp/products/LPS4018-474MRC","rawCanonicalId":null},"summary":{"shortDescription":"Coilcraft LPS4018 series, drum-core shielded power inductor, LPS4018-474MRC, 470 µH ±20%, 150 mA rated current, 140 mA saturation current, 7.8 Ohm DCR, AEC-Q200, surface-mount nonstandard package.","salesMarkdown":"## 470 µH shielded inductor for automotive DC-DC filter stages The Coilcraft LPS4018-474MRC is a 470 µH drum-core shielded inductor rated for 150 mA continuous current with a saturation floor of 140 mA — the 10 mA headroom between rated and saturation current means the core does not saturate before the winding reaches its thermal limit, a design margin that matters in automotive power-stage filters where load transients can push current above the steady-state rating. ## 7.8 Ohm DCR and 4.5 MHz SRF — the parametric trade-offs The 7.8 Ohm maximum DC resistance sets the I²R conduction loss at 150 mA to roughly 175 mW — this is the self-heating floor inside the 1.8 mm seated height, so the thermal rise stays within the ferrite core's Curie temperature margin even in a dense surface-mount layout without forced airflow. A self-resonant frequency of 4.5 MHz defines the upper band edge where the inductor's parasitic winding capacitance cancels the inductive reactance — above this frequency the component behaves as a capacitor, so the 470 µH value is only valid for switching frequencies well below 4.5 MHz, typically in the 100 kHz to 1 MHz range for automotive buck or boost converters.","metaTitle":"Coilcraft LPS4018-474MRC 470µH Shielded Power Inductor","metaDescription":"Coilcraft LPS4018-474MRC drum-core shielded inductor, 470µH ±20%, 150mA rated, 140mA saturation, 7.8Ω DCR, AEC-Q200, -40°C to +125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Coilcraft","Type":"Drum Core","Series":"LPS4018","Package":"Strip","Ratings":"AEC-Q200","Features":"-","Q @ Freq":"-","Shielding":"Shielded","Tolerance":"±20%","Inductance":"470 µH","Mounting Type":"Surface Mount","Package / Case":"Nonstandard","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.154\\\" L x 0.154\\\" W (3.90mm x 3.90mm)","DC Resistance (DCR)":"7.8Ohm Max","Current Rating (Amps)":"150 mA","Height - Seated (Max)":"0.071\\\" (1.80mm)","Operating Temperature":"-40°C~125°C","Supplier Device Package":"-","Frequency - Self Resonant":"4.5MHz","Current - Saturation (Isat)":"140mA","Inductance Frequency - Test":"100 kHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0a1383b82e9440ac5710704b6c85e4ee.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the self-resonant frequency of LPS4018-474MRC and why does it matter?","answer":"The self-resonant frequency is 4.5 MHz. Above this frequency the inductor behaves capacitively, so the 470 µH value is only valid for switching frequencies well below 4.5 MHz — typically 100 kHz to 1 MHz in automotive DC-DC converter stages."},{"question":"What compliance documentation does Coilcraft provide for LPS4018-474MRC?","answer":"Coilcraft provides AEC-Q200 qualification documentation for the LPS4018-474MRC, certifying it has passed automotive-grade stress tests including thermal shock, moisture resistance, mechanical shock, vibration, and solderability. RoHS and REACH compliance data is available from the manufacturer upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/coilcraft/LPS4018-474MRC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/coilcraft/LPS4018-474MRC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}