{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH31MN1R8J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH31MN1R8J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH31MN1R8J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH31MN1R8J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH31 series drum core wirewound inductor, 1.8 µH, ±5%, 150 mA, unshielded, 1206 (3216 metric) SMD package, ferrite core.","salesMarkdown":"## 1.8 µH wirewound for filtering and resonant circuits The LQH31MN1R8J03L is a 1.8 µH drum core wirewound inductor from Murata's LQH31 series, built on a ferrite core and terminated in a standard 1206 (3216 metric) surface-mount footprint. Rated for 150 mA continuous current with a DC resistance of 1.6 Ohm, the I²R loss at full rated current is 36 mW — a factor when the inductor sits in a power supply rail or a low-impedance bias tee. The self-resonant frequency of 60 MHz defines the upper bound of the usable band; above SRF the component behaves capacitively, so it suits switching frequencies up to the low tens of MHz and RF bias/choke applications below 60 MHz. ## Layout consideration: unshielded construction Unshielded means the magnetic field radiates into the surrounding PCB area — adjacent traces carrying high-speed or sensitive analog signals need a keep-out zone or a grounded copper pour between them and this inductor. ## Q factor and test conditions Q factor is specified as 35 minimum at 10 MHz — moderate selectivity typical of a general-purpose ferrite-core wirewound; for narrowband resonant tank circuits a higher-Q ceramic-core part would be a better fit. Inductance is tested at 1 MHz, and the ±5% tolerance holds across the operating temperature range.","metaTitle":"Murata LQH31MN1R8J03L 1.8 µH Unshielded Wirewound Inductor","metaDescription":"Murata LQH31MN1R8J03L drum core wirewound inductor, 1.8 µH ±5%, 150 mA, 1.6 Ohm DCR, 60 MHz SRF, 1206 package. Active production, sourced per RFQ.","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)","Ratings":"-","Q @ Freq":"35 @ 10MHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"1.8 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)":"1.6Ohm","Current Rating (Amps)":"150 mA","Height - Seated (Max)":"0.079\\\" (2.00mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1206 (3216 Metric)","Frequency - Self Resonant":"60MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3128","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/LQH31MN1R8J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH31MN1R8J03L 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}}