{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LQH43NN101K03L","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"LQH43NN101K03L","canonicalUrl":"https://icboms.com/murata-electronics/LQH43NN101K03L","factsUrl":"https://icboms.com/api/mcp/products/LQH43NN101K03L","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics LQH43 series, Drum Core Wirewound Inductor, 100 µH, ±10%, 160 mA, 2.5 Ohm DCR, Unshielded, 1812 (4532 Metric) SMD.","salesMarkdown":"## 100 µH at 160 mA — what the ratings mean for your DC-DC rail The LQH43NN101K03L is a 100 µH drum core wirewound inductor from Murata's LQH43 series, unshielded, in a standard 1812 (4532 Metric) SMD package. Rated at 160 mA continuous, the inductor's current ceiling is set by the 2.5 Ohm max DCR — at full load the copper loss is I²R = 64 mW, which raises the internal temperature roughly 15-20°C above ambient in free air, so derate the current by 10-15% if the board sees 85°C or higher. The self-resonant frequency of 6.8 MHz means the inductor behaves inductively up to that point; above 6.8 MHz the parasitic capacitance dominates and the impedance drops — keep the switching frequency of your buck or boost converter below 2-3 MHz to stay well clear of SRF. ## Unshielded construction — where to place it and where not to Because the part is unshielded, the magnetic field radiates from the drum core — keep a keep-out zone of at least 3-5 mm from sensitive analog traces, other inductors, and low-level signal paths to avoid crosstalk. The Q factor of 40 at 796 kHz is moderate — adequate for general-purpose filtering and energy storage in power supplies, but not for narrowband resonant circuits where a higher-Q (60+) part would reduce insertion loss. The 1812 footprint is widely used across Murata's own LQH43 family and other manufacturers — if a second-source or alternate becomes necessary, the package and 100 µH / 160 mA rating are common enough to cross-reference without a board spin.","metaTitle":"Murata LQH43NN101K03L 100 µH Unshielded Inductor, 160 mA","metaDescription":"Murata LQH43NN101K03L drum core wirewound inductor, 100 µH ±10%, 160 mA, 2.5 Ohm DCR, 1812 SMD. Active lifecycle. 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":"40 @ 796kHz","Shielding":"Unshielded","Tolerance":"±10%","Inductance":"100 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)":"2.5Ohm Max","Current Rating (Amps)":"160 mA","Height - Seated (Max)":"0.110\\\" (2.80mm)","Operating Temperature":"-40°C~105°C","Supplier Device Package":"1812 (4532 Metric)","Frequency - Self Resonant":"6.8MHz","Current - Saturation (Isat)":"-","Inductance Frequency - Test":"1 MHz"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3158","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 LQH43NN101K03L?","answer":"The 1812 footprint and 100 µH / 160 mA rating are common enough that a parametric search across the LQH43 family or competitors like TDK (MLZ series) or Bourns (SRN series) will yield functional equivalents — confirm the DCR and SRF match your application."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/LQH43NN101K03L","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/LQH43NN101K03L 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}}