{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43PB220M26L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43PB220M26L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43PB220M26L","factsUrl":"https://icboms.com/api/mcp/products/LQH43PB220M26L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, Shielded, 22 µH, ±20%, 400 mA, 392.4mOhm, 1812 (4532 Metric), Surface Mount.","salesMarkdown":"## 22 µH shielded drum-core for DC-DC and power-line filtering The Murata LQH43PB220M26L is a 22 µH shielded wirewound inductor in the 1812 (4532 Metric) footprint. It sits in the LQH43 series, a family of ferrite-core drum coils designed for surface-mount power applications where radiated EMI from the magnetic field must stay contained. ## Current ceiling and DC resistance: the thermal budget drivers Rated at 400 mA continuous, this inductor carries the DC bias current that a buck converter or EMI filter leg draws in steady state. The 392.4 mOhm maximum DCR sets the I²R copper loss — at full rated current the winding dissipates roughly 63 mW, which is manageable inside a standard 1812 footprint on a two-layer board with moderate copper pour. The saturation current of 700 mA is the hard ceiling where inductance drops by the test-condition amount. A transient spike or inrush current above 400 mA but below 700 mA is tolerable; sustained operation above 400 mA risks core saturation and loss of filtering effectiveness. Self-resonant frequency is 15 MHz. Above this frequency the inductor's parasitic capacitance dominates and the component behaves capacitively. For a 500 kHz to 2 MHz switching regulator, this part stays well below SRF and maintains inductive impedance across the fundamental and first few harmonics. ## Temperature range and deployment context The ferrite core material retains its magnetic properties across this range; the DCR will increase with temperature per copper's positive temperature coefficient, so the thermal rise at 85°C ambient is higher than at 25°C for the same current. The shielded construction means the magnetic flux is largely contained within the ferrite shell. Adjacent traces carrying sensitive analog signals or high-impedance nodes see less coupled noise than they would from an unshielded drum core of the same inductance and current rating.","metaTitle":"Murata LQH43PB220M26L 22µH Shielded Inductor, 400mA","metaDescription":"Murata LQH43PB220M26L 22µH ±20% shielded drum-core wirewound inductor. 400mA rated, 392.4mOhm DCR, 700mA Isat, 1812 case. 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":"LQH43","Package":"Tape & Reel (TR)","Ratings":"-","Q @ Freq":"-","Shielding":"Shielded","Tolerance":"±20%","Inductance":"22 µH","Mounting Type":"Surface Mount","Package / Case":"1812 (4532 Metric)","Product Status":"Active","Material - Core":"Ferrite","lifecycle_stage":"unknown","Size / Dimension":"0.177\\\" L x 0.126\\\" W (4.50mm x 3.20mm)","Base Product Number":"LQH43PB","DC Resistance (DCR)":"392.4mOhm Max","Current Rating (Amps)":"400 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~125°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"15MHz","Current - Saturation (Isat)":"700mA","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3746","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the saturation current vs rated current for this inductor?","answer":"Rated current is 400 mA; saturation current (Isat) is 700 mA. The part operates linearly up to 400 mA; above that the inductance begins to roll off, with the hard ceiling at 700 mA where inductance drops by the specified amount."},{"question":"What compliance documentation does Murata provide for LQH43PB220M26L?","answer":"Murata provides RoHS and REACH compliance documentation for the LQH43PB220M26L. The part is lead-free and halogen-free per Murata's standard material declarations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43PB220M26L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43PB220M26L 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}}