{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN330J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN330J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN330J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN330J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series drum core wirewound inductor, 33 µH ±5%, 80 mA, 3.8 Ohm DCR, unshielded, 1206 (3216 Metric) package, tape and reel.","salesMarkdown":"## 33 µH wirewound choke for filtering and bias-T circuits The Murata LQH31MN330J03L is a drum core wirewound inductor in the LQH31 series, offering 33 µH inductance with ±5% tolerance in a standard 1206 (3216 Metric) surface-mount package. Rated for 80 mA continuous current, this part suits low-power DC-DC converter output filtering, bias-T networks, and signal-line chokes where the DC resistance of 3.8 Ohm sets the I²R heating budget. The unshielded construction means the magnetic field extends beyond the component body — keep sensitive traces or adjacent inductors at least one package width away to avoid coupling. ## Frequency response and Q factor Self-resonant frequency is 12 MHz, above which the inductor behaves capacitively — this sets the upper usable frequency for filtering applications. Q factor measures 40 at 2.5 MHz, indicating moderate efficiency in tuned circuits at that frequency — acceptable for narrowband impedance matching but not for high-Q resonant tank designs. Inductance is tested at 1 MHz, the standard reference frequency for this value range. Supplied on tape and reel with cut-tape option, compatible with standard pick-and-place for the 1206 package class.","metaTitle":"Murata LQH31MN330J03L 33 µH Inductor, 80 mA, 1206","metaDescription":"Murata LQH31MN330J03L drum core wirewound inductor, 33 µH ±5%, 80 mA, 3.8 Ohm DCR, 1206 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":"LQH31","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Q @ Freq":"40 @ 2.5MHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"33 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)":"3.8Ohm","Current Rating (Amps)":"80 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1206 (3216 Metric)","Frequency - Self Resonant":"12MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/23793266b202ae546e5047be20f0e556.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current rating and DCR of this inductor?","answer":"The LQH31MN330J03L is rated for 80 mA continuous current with a DC resistance of 3.8 Ohm. At full rated current, the I²R loss is approximately 24 mW, which is within the package's thermal capability without derating."},{"question":"What is the self-resonant frequency and Q factor?","answer":"Self-resonant frequency is 12 MHz, and Q factor is 40 at 2.5 MHz. The inductor is effective for filtering and impedance matching up to several MHz, but above 12 MHz it transitions to capacitive behavior."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MN330J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN330J03L 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}}