{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MNR22K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MNR22K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MNR22K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MNR22K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series drum core wirewound inductor, 220 nH ±10%, 240 mA, 602 mOhm DCR, 1206 (3216 metric) SMD, unshielded.","salesMarkdown":"## What this 220 nH drum-core inductor is for The Murata LQH31MNR22K03L is a 220 nH drum core wirewound inductor in the LQH31 series, built on a ferrite core with an unshielded construction. Rated for 240 mA DC with a maximum DC resistance of 602 mOhm, it is sized for low-current power rail filtering, decoupling, and RF bias-T applications where the 250 MHz self-resonant frequency gives useful inductive behavior up through VHF. ## Last Buy — what it means for your BOM Murata has flagged the LQH31MNR22K03L as Last Buy — the manufacturer is ending production, and this is the final procurement window before the part becomes unavailable through authorized channels. For an existing BOM line, the practical path is to secure lifetime-buy stock now or qualify a substitute inductor with matching inductance (220 nH ±10%), current rating (≥240 mA), and 1206 footprint. ## Key ratings and the fit decision The 220 nH ±10% inductance at 1 MHz test frequency is the primary selection parameter — it sets the resonant frequency in an LC tank or the corner frequency in a pi-filter. 240 mA current rating is the DC bias limit before the ferrite core saturates and inductance drops; derate for ambient temperature above 85°C. 602 mOhm max DCR produces an I²R loss of about 35 mW at full rated current — negligible for most circuits but worth checking if the inductor sits in a high-side supply rail where the voltage drop matters. A Q factor of 20 at 25 MHz is moderate — adequate for broadband filtering and decoupling, but not for a narrowband resonant circuit where a higher-Q part would reduce insertion loss. The unshielded construction means the magnetic field fringes outside the core — keep sensitive analog traces or other inductors at least one body width away to avoid coupling.","metaTitle":"Murata LQH31MNR22K03L 220nH Inductor, 240mA, 1206, Last Buy","metaDescription":"Murata LQH31MNR22K03L drum core wirewound inductor, 220 nH ±10%, 240 mA, 602 mOhm DCR, 1206 SMD. Last Buy status — available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Murata Electronics","Type":"Drum Core, Wirewound","Series":"LQH31","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Q @ Freq":"20 @ 25MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"220 nH","Mounting Type":"Surface Mount","Package / Case":"1206 (3216 Metric)","Product Status":"Last Time Buy","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)":"602mOhm Max","Current Rating (Amps)":"240 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1206","Frequency - Self Resonant":"250MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/23793266b202ae546e5047be20f0e556.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order LQH31MNR22K03L or check stock?","answer":"This part is in Last Buy status from Murata. Submit a request with your BOM quantity and target lead time for a quote."},{"question":"What is the closest alternative to LQH31MNR22K03L?","answer":"No official pin-compatible successor is listed. A functional substitute would need 220 nH ±10% inductance, at least 240 mA current rating, and a 1206 footprint. The LQH31 series shares the same base footprint, but verify the specific inductance and current rating of any candidate against your circuit requirements."},{"question":"What compliance documentation does Murata provide for LQH31MNR22K03L?","answer":"The part is listed as a standard Murata inductor in the LQH31 series. RoHS and REACH compliance data is typically available in the manufacturer's product page and datasheet. No UL or IEC certification is noted in the available specifications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MNR22K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MNR22K03L when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}