{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH32MN471K23L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH32MN471K23L","canonicalUrl":"https://icboms.com/murata-electronics/LQH32MN471K23L","factsUrl":"https://icboms.com/api/mcp/products/LQH32MN471K23L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH32 series drum core wirewound inductor, unshielded, 470 µH, ±10%, 45 mA, 25 Ohm DCR, 5 MHz SRF, 1210 (3225 Metric) package, surface mount.","salesMarkdown":"## 470 µH wirewound for low-current filtering and bias-T circuits The Murata LQH32MN471K23L is a 470 µH unshielded drum core wirewound inductor from the LQH32 series, housed in a 1210 (3225 Metric) surface-mount package. Its primary role is to provide inductance in DC-DC converter output filters, bias-T networks, and low-current EMI suppression where the 45 mA current ceiling is not exceeded. ## DC bias and loss budget — what the ratings mean for the BOM line Rated at 45 mA DC, this inductor saturates or overheats if the average current plus ripple exceeds that limit — a 40 mA load with 10 mA ripple already pushes the margin. The 25 Ohm maximum DCR drops 1.125 V at full rated current (45 mA × 25 Ω), which may be acceptable in a 5 V rail but consumes over 50 mW in I²R loss alone. The self-resonant frequency of 5 MHz sets the upper bound for usable inductance — above this frequency the impedance turns capacitive, so the part is best suited for switching frequencies below 1–2 MHz where the inductive reactance dominates. The Q factor of 50 at 796 kHz indicates moderate efficiency at that test point, typical for a ferrite-core wirewound of this value. Inductance is tested at 1 kHz, which is a standard low-frequency reference — the actual inductance at the operating frequency will be slightly lower due to core permeability roll-off, but the 470 µH nominal value holds well below the SRF. ## Board-fit and temperature envelope The unshielded construction means magnetic flux couples into nearby traces — keep sensitive signal routing at least one component width away to avoid crosstalk. The inductance tolerance of ±10 % is tight enough for most filtering and resonant applications, though a tighter grade may be needed for precision tuned circuits.","metaTitle":"Murata LQH32MN471K23L Inductor, 470 µH, 45 mA, 1210","metaDescription":"Murata LQH32MN471K23L drum core wirewound inductor, 470 µH ±10%, 45 mA rated current, 25 Ohm DCR, 5 MHz SRF, 1210 package.","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) Cut Tape (CT)","Ratings":"-","Q @ Freq":"50 @ 796kHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"470 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)":"25Ohm Max","Current Rating (Amps)":"45 mA","Height - Seated (Max)":"0.087\\\" (2.20mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1210 (3225 Metric)","Frequency - Self Resonant":"5MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 kHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cfd82089124c69e5e21a12ea773111de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Murata provide for LQH32MN471K23L?","answer":"The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC) for this part. Standard Murata documentation for the LQH32 series typically includes RoHS and REACH declarations — confirm at RFQ if formal compliance paperwork is required for your BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH32MN471K23L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH32MN471K23L 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}}