{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN2R7J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN2R7J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN2R7J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN2R7J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series, Drum Core Wirewound Inductor, 2.7 µH, ±5%, 135 mA, 550 mOhm DCR, 1206 (3216 Metric), Unshielded.","salesMarkdown":"## 2.7 µH drum core wirewound for RF and DC-DC filtering The Murata LQH31MN2R7J03L is a 2.7 µH ±5% drum core wirewound inductor from the LQH31 series, housed in a standard 1206 (3216 Metric) surface-mount package. The unshielded construction means magnetic flux radiates from the core — keep it at least one part width away from sensitive analog traces or adjacent inductors to avoid coupling. ## Self-resonant frequency and Q factor Self-resonant frequency is 43 MHz, which sets the upper limit for inductive behaviour — above this frequency the part becomes capacitive. Practical use should stay well below 43 MHz, typically at 20–30 MHz or lower. Q factor is 35 at 10 MHz, giving a moderate selectivity for narrowband impedance matching in the HF band. Inductance is tested at 1 MHz, which is the standard reference frequency for this value range. ## Temperature range and deployment context The ferrite core material provides stable inductance over this temperature range, though DCR will rise with temperature per the copper winding's positive temperature coefficient. ## Active production and sourcing posture This part is still a valid BOM line for new designs.","metaTitle":"Murata LQH31MN2R7J03L 2.7 µH Inductor, 135 mA, 1206","metaDescription":"Active Murata LQH31MN2R7J03L drum core wirewound inductor, 2.7 µH ±5%, 135 mA, 550 mOhm DCR, 1206 package. Available 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":"35 @ 10MHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"2.7 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)":"550mOhm","Current Rating (Amps)":"135 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C~85°C","Supplier Device Package":"1206 (3216 Metric)","Frequency - Self Resonant":"43MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7400","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 LQH31MN2R7J03L?","answer":"Rated for 135 mA continuous current with a DC resistance of 550 mOhm. The DCR is the main loss element — at full rated current, the self-heating is roughly 10 mW (I²R), negligible in most boards."},{"question":"What package size is LQH31MN2R7J03L?","answer":"Compatible with standard pick-and-place and reflow profiles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH31MN2R7J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN2R7J03L 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}}