{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN3R3J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN3R3J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN3R3J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN3R3J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series, Drum Core Wirewound inductor, 3.3 µH, ±5%, 130 mA, 793 mOhm DCR, unshielded, 1206 (3216 Metric), Tape & Reel.","salesMarkdown":"## What the 3.3 µH and 130 mA mean for your circuit The LQH31MN3R3J03L is a 3.3 µH drum-core wirewound inductor in the LQH31 series, rated for 130 mA continuous current with a maximum DC resistance of 793 mOhm. At 130 mA, the I²R loss is about 13.4 mW — negligible for most circuits, but the DCR matters for efficiency in a low-current DC-DC converter where the inductor sees the full load current. The self-resonant frequency is 38 MHz, so this inductor is usable in filtering and DC-DC switching applications up to roughly 10-15 MHz before parasitic capacitance starts to bypass the inductance. The Q factor of 35 at 8 MHz tells you the energy storage efficiency is decent at that frequency — expect the Q to peak near the self-resonant region. It is unshielded, so magnetic flux will couple into adjacent copper pours or traces. On a dense board, leave at least one inductor width of clearance to sensitive signal paths, or rotate the part 90 degrees to the aggressor trace. ## Package and rework considerations Supplied in Tape & Reel (TR) or Cut Tape (CT) — pick-and-place friendly. The 1206 package is forgiving for prototype hand assembly; just pre-tin one pad, reflow the part into place, then solder the other side. ## Last Buy — what it means for your BOM Murata has flagged this part as Last Buy. That means the manufacturer is winding down production — there may be a last-time-buy window, after which the part will be discontinued. If this inductor is on your active BOM, you need to either secure a lifetime buy quantity or qualify a replacement before the LTB closes. No official successor or pin-compatible alternative is listed in the available records. The LQH31 series includes other inductance values and tolerances, but a direct drop-in replacement for 3.3 µH at 130 mA in the same package would need to be sourced from another series or manufacturer — expect a requalification cycle. It does not meet the automotive AEC-Q200 grade (typically -40°C to +125°C or +155°C), so avoid it for under-hood or engine-bay designs. The ferrite core material is stable across this range, but the DCR will increase with temperature by roughly 0.4%/°C. At 85°C ambient, the DCR rises to about 1.0 ohm, increasing the I²R loss by 25% — factor that into your thermal budget if the inductor is near a hot component.","metaTitle":"Murata LQH31MN3R3J03L 3.3 µH Inductor, 130 mA, 1206","metaDescription":"Murata LQH31MN3R3J03L 3.3 µH unshielded wirewound inductor, 130 mA, 793 mOhm DCR, 1206 package. Last Buy status — source 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":"35 @ 8MHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"3.3 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)":"793mOhm Max","Current Rating (Amps)":"130 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1206 (3216 Metric)","Frequency - Self Resonant":"38MHz","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":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MN3R3J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN3R3J03L 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}}