{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN820K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN820K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN820K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN820K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 82 µH, ±10%, 170 mA, Unshielded, 1812 (4532 Metric) SMD, Tape & Reel.","salesMarkdown":"## What the 82 µH rating means for your filter or DC-DC stage The Murata LQH43NN820K03L is a drum core wirewound inductor in the LQH43 series, delivering 82 µH ±10% in an unshielded 1812 (4532 Metric) surface-mount package. That 82 µH value is the inductance at 1 MHz test frequency — the sweet spot for power supply output filters, LC tank circuits, and DC-DC converter energy storage where the switching frequency lands in the low-MHz range. The self-resonant frequency of 7.5 MHz tells you where the inductor stops behaving like an inductor and starts looking capacitive; keep your switching frequency below that to avoid efficiency drop-off. ## Footprint and hand-solderability The 1812 body (4.50 mm x 3.20 mm, seated height 2.80 mm) is a standard SMD size that's friendly for both reflow and hand soldering — a fine-tipped iron and some flux will get it down on a prototype board without a hot-air station. The unshielded construction means you'll want to keep magnetic-sensitive traces (like feedback loops or audio paths) a few millimeters away, but for general filtering it's a non-issue. The ferrite core material gives stable inductance over temperature and current, typical for drum core wirewound parts in this class. That means it's safe to specify for new designs and there's no last-time-buy clock ticking.","metaTitle":"Murata LQH43NN820K03L 82 µH Unshielded Inductor, 170 mA","metaDescription":"Murata LQH43NN820K03L drum core wirewound inductor, 82 µH ±10%, 170 mA, 2.2 Ohm DCR, 1812 SMD, active. Quoted 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":"-","Q @ Freq":"35 @ 1MHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"82 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":"LQH43NN","DC Resistance (DCR)":"2.2Ohm Max","Current Rating (Amps)":"170 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"7.5MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2818","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0d6b1d39c76e30b3c05600906460c39.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LQH43NN820K03L in this Inductors & Chokes family?","answer":"Within the LQH43 series, other inductance values share the same 1812 footprint and pinout — for example, a 100 µH variant (LQH43NN101K03L) would drop in if your circuit needs a slightly higher inductance at a similar current rating. Always check the DCR and self-resonant frequency against your application before swapping."},{"question":"What compliance documentation does Murata Electronics provide for LQH43NN820K03L?","answer":"Murata typically provides RoHS and REACH compliance declarations for the LQH43 series. Specific certificates (UL, IEC) are not listed in the standard product specs — check the manufacturer's documentation portal for the latest compliance sheets."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN820K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN820K03L 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}}