{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LPS4018-561MRC","brand":"Coilcraft","brandSlug":"coilcraft","productSlug":"LPS4018-561MRC","canonicalUrl":"https://icboms.com/coilcraft/LPS4018-561MRC","factsUrl":"https://icboms.com/api/mcp/products/LPS4018-561MRC","rawCanonicalId":null},"summary":{"shortDescription":"Coilcraft LPS4018 series, Drum Core shielded power inductor, LPS4018-561MRC, 560 nH, ±20%, 1.9 A, 4.8 A saturation, 33 mOhm DCR, AEC-Q200, 3.90 mm x 3.90 mm x 1.80 mm, Surface Mount.","salesMarkdown":"## What the 1.9 A rated current and 4.8 A saturation tell you The LPS4018-561MRC: The 1.9 A continuous rating is the DC current that raises the temperature by a defined delta (typically 40 °C) above ambient — this is the thermal limit for steady-state operation in your power rail. The 4.8 A saturation current (Isat) is where the inductance drops by a specified percentage (usually 10-30%), meaning the core is saturating and the inductor no longer stores energy effectively. For a buck converter or a filter choke, you size the inductor so the peak inductor current stays below Isat with margin; the RMS current should be at or below the 1.9 A thermal rating for reliable operation. The 33 mOhm max DCR is the winding resistance. At 1.9 A, the I²R loss is 0.12 W, which contributes to the self-heating. In a dense power supply, that 120 mW may matter for thermal budget; in a lower-current application the DCR loss is negligible. ## AEC-Q200 and the automotive qualification AEC-Q200 qualification means this inductor has passed the stress tests defined by the Automotive Electronics Council for passive components: thermal shock, humidity bias, mechanical shock, vibration, solderability, and terminal strength. AEC-Q200 qualification combined with this temperature range makes the LPS4018-561MRC suitable for engine control units, transmission controllers, and other under-hood power supplies. ## Shielded drum core — why it matters for EMI The shielded construction uses a ferrite core with a magnetic shield that contains the flux within the component. This reduces radiated EMI compared to an unshielded drum core, which is important when the inductor sits near sensitive analog circuits, RF sections, or other power rails on the same board. It also reduces the chance of crosstalk between adjacent inductors in a multi-phase supply. The self-resonant frequency (SRF) of 250 MHz is the frequency at which the inductor's parasitic capacitance resonates with its inductance, turning it into a high-impedance parallel tank. Above this frequency the component behaves capacitively, not inductively. For switching frequencies below about 25 MHz (1/10th of SRF), the inductor behaves as a pure inductor; the 250 MHz SRF gives plenty of headroom for typical 1-2 MHz DC-DC converters. The 3.90 mm x 3.90 mm x 1.80 mm (0.154\" x 0.154\" x 0.071\") nonstandard surface-mount package fits the LPS4018 family footprint. The strip packaging means the parts come in a cut-tape or tube format rather than a full reel, which is typical for engineering samples or small-batch production. For volume orders, verify the reel quantity with your distributor.","metaTitle":"Coilcraft LPS4018-561MRC 560nH Shielded Power Inductor","metaDescription":"Coilcraft LPS4018-561MRC, 560 nH shielded drum core inductor, 1.9 A rated, 4.8 A saturation, 33 mOhm DCR, AEC-Q200. Active, quoted to order.","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":"560 nH","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)":"33mOhm Max","Current Rating (Amps)":"1.9 A","Height - Seated (Max)":"0.071\\\" (1.80mm)","Operating Temperature":"-40°C~125°C","Supplier Device Package":"-","Frequency - Self Resonant":"250MHz","Current - Saturation (Isat)":"4.8A","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 closest pin-compatible alternative to LPS4018-561MRC in the LPS4018 family?","answer":"Within the LPS4018 series, the inductance value is the differentiating parameter. A lower-inductance sibling (e.g., 470 nH) will have a higher saturation current and lower DCR; a higher-inductance sibling (e.g., 680 nH) will have lower saturation current and higher DCR. The 3.90 mm x 3.90 mm footprint and 1.80 mm height are common across the series, so any LPS4018 part is a drop-in replacement for the same pad layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/coilcraft/LPS4018-561MRC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/coilcraft/LPS4018-561MRC 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}}