{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BLM15BB121SN1D","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"BLM15BB121SN1D","canonicalUrl":"https://icboms.com/murata-electronics/BLM15BB121SN1D","factsUrl":"https://icboms.com/api/mcp/products/BLM15BB121SN1D","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics EMIFIL® BLM15 series ferrite bead, BLM15BB121SN1D, Signal Line type, 120 Ohms at 100 MHz, 300 mA, 550 mOhm DCR, 0402 (1005 Metric) SMD package.","salesMarkdown":"## Signal line suppression in a 0402 footprint The Murata BLM15BB121SN1D is a single-line ferrite bead from the EMIFIL® BLM15 series, designed to suppress high-frequency noise on signal lines. It delivers 120 Ohms of impedance at 100 MHz, a common reference point for conducted emission compliance in the 30-100 MHz band, where many switching regulators and digital clocks radiate. Rated for 300 mA continuous current with a maximum DC resistance of 550 mOhm, this bead adds a voltage drop of roughly 165 mV at full load — a figure to budget in low-voltage supply rails where every millivolt matters for load regulation. Listed as Active in production, the BLM15BB121SN1D carries no lifecycle risk for ongoing BOM continuity.","metaTitle":"Murata BLM15BB121SN1D Ferrite Bead, 120 Ohm @ 100 MHz, 0402","metaDescription":"Murata BLM15BB121SN1D EMIFIL ferrite bead, 120 Ohms at 100 MHz, 300 mA, 550 mOhm DCR, 0402 SMD, -55 to 125°C. Active production. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["EMI Filters & Ferrite Beads"],"specifications":{"Mfr":"Murata Electronics","Series":"EMIFIL®, BLM15","Package":"Tape & Reel (TR); Cut Tape (CT)","Ratings":"-","Filter Type":"Signal Line","Height (Max)":"0.022\\\" (0.55mm)","Mounting Type":"Surface Mount","Package / Case":"0402 (1005 Metric)","Product Status":"Active","Number of Lines":"1","lifecycle_stage":"unknown","Size / Dimension":"0.039\\\" L x 0.022\\\" W (1.00mm x 0.55mm)","Base Product Number":"BLM15BB","Current Rating (Max)":"300mA","Impedance @ Frequency":"120 Ohms @ 100 MHz","Operating Temperature":"-55°C~125°C","DC Resistance (DCR) (Max)":"550mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/73c2e560dc04bcd20af9d3bc02fbbc8b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BLM15BB121SN1D/alternatives.json"},"ai":{"faq":[{"question":"What is the impedance and current rating of BLM15BB121SN1D?","answer":"The BLM15BB121SN1D provides 120 Ohms impedance at 100 MHz, with a maximum current rating of 300 mA and a DCR of 550 mOhm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/BLM15BB121SN1D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/BLM15BB121SN1D 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}}