{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN180J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN180J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN180J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN180J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series drum core wirewound inductor, 18 µH ±5%, 85 mA, 3.4 Ohm DCR, unshielded, 1206 (3216 Metric) surface mount package.","salesMarkdown":"## 18 µH in a 1206 footprint — what the ratings mean for the BOM The Murata LQH31MN180J03L is a drum-core wirewound inductor in the LQH31 series, delivering 18 µH ±5% in a standard 1206 (3216 Metric) surface-mount package. The self-resonant frequency of 15 MHz marks the upper bound for inductive behaviour; above that frequency the parasitic capacitance dominates and the impedance rolls off, so this part suits filtering and energy storage in DC-DC converters and signal conditioning up to the low-MHz range. ## Q factor and test conditions — what 35 at 5 MHz tells you The Q factor is specified as 35 at 5 MHz, measured at the 1 MHz test frequency for inductance. This Q value indicates moderate energy storage efficiency at that frequency — acceptable for general-purpose filtering where insertion loss is not the critical parameter, but not a high-Q part for narrow-band resonant circuits. The unshielded construction means the magnetic field extends beyond the component body; adjacent traces and components in a dense layout may couple into this field, so keep a clearance of at least one part width to nearby sensitive circuits or use a shielded alternative if cross-talk becomes an issue.","metaTitle":"Murata LQH31MN180J03L Inductor, 18 µH, 85 mA, 1206","metaDescription":"Murata LQH31MN180J03L drum core wirewound inductor, 18 µH ±5%, 85 mA rated current, 3.4 Ohm DCR, 1206 package. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Murata Electronics","Type":"Drum Core, Wirewound","Series":"LQH31","Package":"Tape & Reel (TR)","Ratings":"-","Q @ Freq":"35 @ 5MHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"18 µH","Mounting Type":"Surface Mount","Package / Case":"1206 (3216 Metric)","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.063\\\" W (3.20mm x 1.60mm)","Base Product Number":"LQH31MN","DC Resistance (DCR)":"3.4Ohm","Current Rating (Amps)":"85 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C~85°C","Supplier Device Package":"1206 (3216 Metric)","Frequency - Self Resonant":"15MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3152","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/23793266b202ae546e5047be20f0e556.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MN180J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN180J03L 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}}