{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NH121J03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NH121J03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NH121J03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NH121J03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 120 µH, ±5%, 130 mA, 3.12 Ohm DCR, Unshielded, Ferrite Core, 1812 (4532 Metric), AEC-Q200.","salesMarkdown":"## 120 µH, 130 mA — what the ratings mean for your BOM The LQH43NH121J03L is a 120 µH drum-core wirewound inductor in Murata's LQH43 series, rated for 130 mA continuous DC current with a maximum DC resistance of 3.12 Ω. The 120 µH value at ±5% tolerance suits low-frequency filtering and energy storage in DC-DC converter output stages or input pi-filters where the ripple current stays below 130 mA. The 3.12 Ω DCR means the I²R loss at full rated current is about 53 mW — negligible in most circuits, but worth checking if the inductor sits in a high-ambient enclosure where every milliwatt of self-heating adds to the thermal budget. The ferrite core material and unshielded construction mean the magnetic field radiates — keep sensitive analog traces or RF circuits at least a few millimeters away from the inductor body in layout. ## Frequency limits and Q factor The self-resonant frequency is 6.2 MHz — above that the inductor behaves capacitively. The Q factor is 40 at 796 kHz, which tells you the inductor's efficiency in a resonant tank at that frequency: a Q of 40 means the stored energy is 40 times the energy lost per cycle. For a 120 µH part, the SRF at 6.2 MHz is typical for a ferrite-core wirewound of this size; the part is useful as a choke or filter inductor up to about 1–2 MHz before parasitic capacitance dominates. The footprint is standard for 1812 chip inductors — the solder pads should extend 0.5 mm beyond each end of the body for a reliable fillet. The part is supplied in tape-and-reel or cut-tape options, so it feeds into pick-and-place without special handling.","metaTitle":"Murata LQH43NH121J03L 120 µH Inductor, AEC-Q200, 1812","metaDescription":"Murata LQH43NH121J03L drum core wirewound inductor, 120 µH ±5%, 130 mA, 3.12 Ω DCR, AEC-Q200, 1812 SMD. 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) Cut Tape (CT)","Ratings":"AEC-Q200","Features":"-","Q @ Freq":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±5%","Inductance":"120 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":"LQH43NH","DC Resistance (DCR)":"3.12Ohm Max","Current Rating (Amps)":"130 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"1812","Frequency - Self Resonant":"6.2MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b8fe98626664ecf0068858b1162f6220.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NH121J03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NH121J03L 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}}