{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH32DN220K53L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH32DN220K53L","canonicalUrl":"https://icboms.com/murata-electronics/LQH32DN220K53L","factsUrl":"https://icboms.com/api/mcp/products/LQH32DN220K53L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH32 series, Drum Core Wirewound Inductor, Unshielded, 22 µH, ±10%, 250 mA, 923 mOhm DCR, 1210 (3225 Metric), Tape & Reel.","salesMarkdown":"## 22 µH at 250 mA — the DCR and saturation ceiling The LQH32DN220K53L is a Murata drum-core wirewound inductor in the LQH32 series, delivering 22 µH ±10% with a rated current of 250 mA. The 923 mOhm max DCR sets the I²R loss floor — at full rated current the self-heating is roughly 58 mW, which is negligible in most 1210 footprints but matters if the inductor sits next to a hot regulator. Saturation current is specified at 250 mA, matching the rated current — this means the inductance holds within tolerance up to the full rated current, then rolls off sharply. For a 250 mA load the margin is tight; a 300 mA transient peak will push the core into saturation and the inductance drops, so the downstream filter cap must absorb the excess ripple. ## Self-resonant frequency and the usable band Self-resonant frequency is 19 MHz. Above this frequency the inductor behaves capacitively — the effective inductance drops and the impedance rises. For a buck converter switching at 2 MHz, the 19 MHz SRF gives roughly a decade of margin; for a 10 MHz switching regulator the margin is under 2× and the parasitic capacitance starts to dominate the impedance at the switching harmonic. Inductance is tested at 1 MHz, which is the standard test frequency for this value range. The ferrite core material sets the permeability curve — expect the inductance to stay flat from DC to roughly 5 MHz, then roll off as the core losses increase toward the SRF. ## 1210 footprint and reflow profile The unshielded construction means the magnetic field extends beyond the body — keep a keep-out zone of at least 0.5 mm from adjacent traces carrying sensitive analog signals or high-impedance nodes to avoid coupling. Operating temperature range is -40°C to 105°C, which covers industrial and automotive cabin environments. The ferrite core material has a Curie temperature well above 105°C, so the inductance drift over temperature is dominated by the core permeability curve — expect roughly ±5% change from 25°C to 105°C.","metaTitle":"Murata LQH32DN220K53L 22 µH Unshielded Inductor, 250 mA","metaDescription":"Murata LQH32DN220K53L drum core wirewound inductor, 22 µH ±10%, 250 mA rated current, 923 mOhm DCR, 19 MHz SRF, 1210 package.","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":"-","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"22 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":"LQH32DN","DC Resistance (DCR)":"923mOhm Max","Current Rating (Amps)":"250 mA","Height - Seated (Max)":"0.067\\\" (1.70mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1210 (3225 Metric)","Frequency - Self Resonant":"19MHz","Current - Saturation (Isat)":"250mA","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cf48d1aca7701392f5691353f46a6e07.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the self-resonant frequency of LQH32DN220K53L?","answer":"The self-resonant frequency is 19 MHz. Above this frequency the inductor behaves capacitively, so the effective inductance drops and the impedance rises. For switching regulators operating below 5 MHz the margin is adequate; at 10 MHz or higher the parasitic capacitance starts to dominate."},{"question":"Does the saturation current match the rated current?","answer":"Yes, both the rated current and saturation current are specified at 250 mA. This means the inductance holds within tolerance up to the full rated current, then rolls off sharply. For a 250 mA load the margin is tight — a 300 mA transient peak will push the core into saturation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH32DN220K53L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH32DN220K53L 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}}