{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH3NPN3R3MMRE","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH3NPN3R3MMRE","canonicalUrl":"https://icboms.com/murata-electronics/LQH3NPN3R3MMRE","factsUrl":"https://icboms.com/api/mcp/products/LQH3NPN3R3MMRE","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH3 series, Drum Core Wirewound Inductor, Shielded, 3.3 µH, ±20%, 1.55 A, 106 mOhm, 1212 (3030 Metric), Surface Mount.","salesMarkdown":"## 3.3 µH shielded wirewound — parametric fit for DC-DC input/output filtering The Murata LQH3NPN3R3MMRE is a 3.3 µH shielded wirewound inductor from the LQH3 series, built on a ferrite core in a 1212 (3030 Metric) surface-mount package. Its 1.55 A continuous current rating and 1.2 A saturation current (Isat) define the usable load range for a buck converter output filter or a module input choke — the saturation limit is the hard ceiling; once the core saturates, inductance collapses and ripple current rises sharply. DC resistance is 106 mOhm max, which at 1.55 A produces roughly 255 mW of I²R loss — within the thermal budget of the 1212 footprint for most board layouts, but worth checking against the ambient temperature derating if the inductor sits near a hot regulator or in a confined enclosure. ## Obsolete — last-time-buy channel for existing BOM positions Murata has marked the LQH3NPN3R3MMRE as Obsolete. No official successor order code is recorded in the lifecycle data. New designs should migrate to an active Murata LQH3-series variant with matching 3.3 µH inductance, 1212 footprint, and similar DCR/saturation profile; the base product number LQH3NPN allows parametric filtering against the active portfolio. ## Self-resonant frequency and temperature grade The self-resonant frequency (SRF) is 70 MHz. Below SRF the component behaves as an inductor; above it, parasitic capacitance dominates and the impedance becomes capacitive. For a 500 kHz to 2 MHz switching regulator, the 70 MHz SRF provides ample margin — the inductor's impedance stays inductive across the fundamental and the first several harmonics.","metaTitle":"Murata LQH3NPN3R3MMRE 3.3 µH Shielded Inductor, 1.55 A","metaDescription":"Murata LQH3NPN3R3MMRE 3.3 µH shielded wirewound inductor, 1.55 A rated current, 106 mOhm DCR, 1212 package. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Inductors & Chokes"],"specifications":{"Mfr":"Murata Electronics","Type":"Drum Core, Wirewound","Series":"LQH3","Package":"Tape & Reel (TR); Cut Tape (CT)","Ratings":"-","Q @ Freq":"-","Shielding":"Shielded","Tolerance":"±20%","Inductance":"3.3 µH","Mounting Type":"Surface Mount","Package / Case":"1212 (3030 Metric)","Product Status":"Obsolete","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.118\\\" L x 0.118\\\" W (3.00mm x 3.00mm)","Base Product Number":"LQH3NPN","DC Resistance (DCR)":"106mOhm Max","Current Rating (Amps)":"1.55 A","Height - Seated (Max)":"0.059\\\" (1.50mm)","Operating Temperature":"-40°C~85°C","Supplier Device Package":"1212 (3030 Metric)","Frequency - Self Resonant":"70MHz","Current - Saturation (Isat)":"1.2A","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4acadd7593b10513236d4460c4756d1a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest alternative to LQH3NPN3R3MMRE?","answer":"No official pin-compatible successor is listed. The base product number LQH3NPN identifies the family; an active Murata LQH3-series inductor with 3.3 µH, 1212 footprint, and similar DCR and saturation ratings is the parametric replacement path. Confirm the BOM position's current and saturation requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH3NPN3R3MMRE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH3NPN3R3MMRE 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}}