{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN1R5K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN1R5K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN1R5K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN1R5K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series, Drum Core Wirewound Inductor, 1.5 µH, ±10%, 155 mA, 1.3 Ohm DCR, Unshielded, 1206 (3216 Metric), Tape & Reel.","salesMarkdown":"## 1.5 µH wirewound inductor — BOM-fit and last-buy reality The Murata LQH31MN1R5K03L is a 1.5 µH drum-core wirewound inductor in the LQH31 series, packaged in a standard 1206 (3216 Metric) footprint for surface-mount assembly. Rated for 155 mA continuous current with a maximum DC resistance of 1.3 Ohm — the DCR sets the I²R heating and DC voltage drop in the supply rail, so the 155 mA figure is the thermal limit at 85°C ambient, not a hard saturation current. The unshielded ferrite-core construction means the magnetic field radiates into the surrounding board area — adjacent traces carrying sensitive analog or RF signals need keep-out spacing to avoid coupled noise. ## Q factor and self-resonant frequency — where it works A minimum Q of 35 at 10 MHz and a self-resonant frequency of 75 MHz define the useful band: below resonance the inductor behaves as an inductor; near and above it, parasitic capacitance dominates and the impedance rolls off. For a 1.5 µH part, 75 MHz SRF means the inductor is usable in low-MHz switching converters (buck/boost at 1–3 MHz) and as a decoupling element in RF bias circuits up to about 30 MHz before the Q drop becomes significant. ## Last Buy — procurement window closing Murata has set the LQH31MN1R5K03L to Last Buy status — the manufacturer is winding down production, so remaining inventory is the final available stock through independent distribution. For a BOM line that depends on this exact inductance, tolerance, and footprint, the decision is to secure the lifetime buy quantity now or qualify a replacement before the supply dries up.","metaTitle":"Murata LQH31MN1R5K03L Inductor, 1.5 µH, 155 mA, 1206","metaDescription":"Murata LQH31MN1R5K03L wirewound drum-core inductor, 1.5 µH, 155 mA, 1.3 Ohm DCR, 1206 SMD. Last Buy status — source remaining inventory now. Quoted to order.","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":"35 @ 10MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"1.5 µH","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)":"1.3Ohm Max","Current Rating (Amps)":"155 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C~85°C","Supplier Device Package":"1206 (3216 Metric)","Frequency - Self Resonant":"75MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/23793266b202ae546e5047be20f0e556.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the inductance and current rating of LQH31MN1R5K03L?","answer":"1.5 µH ±10%, rated for 155 mA continuous with a maximum DC resistance of 1.3 Ohm. The self-resonant frequency is 75 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MN1R5K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN1R5K03L 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}}