{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH32MN330K23L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH32MN330K23L","canonicalUrl":"https://icboms.com/murata-electronics/LQH32MN330K23L","factsUrl":"https://icboms.com/api/mcp/products/LQH32MN330K23L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH32 series, Drum Core Wirewound Inductor, 33 µH, ±10%, 115 mA, Unshielded, 3.5 Ohm DCR, 1210 (3225 Metric), Surface Mount.","salesMarkdown":"## 33 µH drum-core selection for DC-DC filtering and bias-T circuits The Murata LQH32MN330K23L is a 33 µH drum-core wirewound inductor in the LQH32 series, unshielded, with a ferrite core. The 115 mA DC current rating is the point at which the inductance typically drops by 10% due to core saturation — above this, the effective inductance falls off and ripple current increases in a buck converter output filter. The 3.5 Ohm maximum DCR produces an I²R loss of about 46 mW at rated current — negligible in a power rail but significant in a low-impedance bias-T where the DC bias current flows through the same winding. The 12 MHz self-resonant frequency means this inductor stays inductive up to about 6-8 MHz in practice; above that, the parasitic capacitance dominates and the impedance rolls off. ## Unshielded construction and layout considerations Because the LQH32MN330K23L is unshielded, the magnetic field radiates from the drum core. In a dense PCB layout, keep a clearance of at least one component width (3.2 mm) from sensitive analog traces or other inductors to avoid mutual coupling. The 1210 (3225 metric) footprint is standard and fits the common LQH32 pad layout used across the series. The ferrite core material maintains its permeability across this range with a typical drift of less than 5% from 25°C to 85°C. ## Active production and ordering posture The base product number LQH32MN covers the full inductance range in this unshielded drum-core family. The -330K suffix encodes the 33 µH value and ±10% tolerance. Tape-and-reel packaging is standard for the 1210 footprint, compatible with automated pick-and-place assembly.","metaTitle":"Murata LQH32MN330K23L 33 µH Unshielded Inductor, 115 mA","metaDescription":"Murata LQH32MN330K23L drum core wirewound inductor, 33 µH ±10%, 115 mA rated current, 3.5 Ohm DCR, unshielded 1210 package. Active production, sourced 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":"LQH32","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Q @ Freq":"40 @ 1MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"33 µH","Mounting Type":"Surface Mount","Package / Case":"Nonstandard","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Base Product Number":"LQH32MN","DC Resistance (DCR)":"3.5Ohm Max","Current Rating (Amps)":"115 mA","Height - Seated (Max)":"0.087\\\" (2.20mm)","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"1210 (3225 Metric)","Frequency - Self Resonant":"12MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cfd82089124c69e5e21a12ea773111de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the self-resonant frequency and why does it matter for this 33 µH inductor?","answer":"The self-resonant frequency is 12 MHz. Above this frequency, the inductor's parasitic capacitance dominates and the component behaves capacitively rather than inductively. For a buck converter switching at 500 kHz, this is well within the inductive region; for a filter at 10 MHz, the margin is narrow and the effective inductance will be lower than 33 µH."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH32MN330K23L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH32MN330K23L 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}}