{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH32MN391K23L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH32MN391K23L","canonicalUrl":"https://icboms.com/murata-electronics/LQH32MN391K23L","factsUrl":"https://icboms.com/api/mcp/products/LQH32MN391K23L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH32 series, Drum Core Wirewound Inductor, 390 µH, ±10%, 50 mA, Unshielded, Ferrite Core, 1210 (3225 Metric) SMD Package.","salesMarkdown":"## Inductance, current rating and the 1210 footprint The LQH32MN391K23L is a drum-core wirewound inductor from Murata's LQH32 series, delivering 390 µH ±10% in the standard 1210 (3225 metric) SMD footprint. With a rated current of 50 mA and a maximum DC resistance of 22 Ω, the dc power loss at full current is I²R = 55 mW — a figure that sets the self-heating and derating margin in the application. The unshielded ferrite core means the magnetic field extends beyond the component body. In a dense layout, adjacent traces carrying high-frequency signals will couple into this inductor, and the inductor itself radiates a stray field that can inject noise into nearby loops — the PCB layout must keep a clearance zone around the part, especially under the 1210 land pattern. ## Frequency band: where the Q factor and SRF matter The Q factor is specified at 50 (minimum) measured at 796 kHz, and the self-resonant frequency (SRF) is 5 MHz. Below the SRF, the inductor behaves as a near-ideal inductance; above it, the parasitic capacitance between windings dominates and the component transitions to a capacitive impedance. For filtering roles, the usable band ends at roughly one-third the SRF, so this part is effective up to about 1.5–2 MHz. The inductance is tested at 1 MHz, confirming that the value holds within tolerance at that frequency — a useful reference for designers who need to know the inductance remains stable in the lower MHz range. ## Operating temperature and production status The temperature envelope does not extend into the +105°C or +125°C bands required for under-hood automotive or sealed outdoor enclosures with high self-heating. Lifecycle status is active per Murata's current product record — no end-of-life or last-time-buy notice is in effect for the LQH32MN391K23L. The base product number LQH32MN identifies the series; the suffix K23L encodes the inductance value, tolerance, and packaging variant. ## Sourcing posture for volume and qualification Sourced through authorized and independent distribution channels. No minimum order quantity is stated in the standard listing — volume requirements are handled per quote.","metaTitle":"Murata LQH32MN391K23L 390µH Unshielded Wirewound Inductor","metaDescription":"Murata LQH32MN391K23L drum core wirewound inductor, 390 µH, 50 mA, unshielded ferrite core, 1210 SMD package. Active production. Quoted 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":"LQH32","Package":"Tape & Reel (TR)","Ratings":"-","Q @ Freq":"50 @ 796kHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"390 µH","Mounting Type":"Surface Mount","Package / Case":"Nonstandard","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Base Product Number":"LQH32MN","DC Resistance (DCR)":"22Ohm Max","Current Rating (Amps)":"50 mA","Height - Seated (Max)":"0.087\\\" (2.20mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1210","Frequency - Self Resonant":"5MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1278","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cfd82089124c69e5e21a12ea773111de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance and current rating of LQH32MN391K23L?","answer":"390 µH ±10% at 50 mA DC rated current. The DC resistance is 22 Ω max."},{"question":"What package and footprint does LQH32MN391K23L use?","answer":"Surface-mount 1210 (3225 metric) nonstandard package."},{"question":"What is the self-resonant frequency and Q factor of this inductor?","answer":"Self-resonant frequency is 5 MHz. Q is 50 minimum at 796 kHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH32MN391K23L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH32MN391K23L 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}}