{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BLM15BX121SN1D","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"BLM15BX121SN1D","canonicalUrl":"https://icboms.com/murata-electronics/BLM15BX121SN1D","factsUrl":"https://icboms.com/api/mcp/products/BLM15BX121SN1D","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics EMIFIL®, BLM15 series ferrite bead, BLM15BX121SN1D, 0402 (1005 Metric), 120 Ohms @ 100 MHz, 600 mA, 170 mOhm DCR, single-line signal filter.","salesMarkdown":"## What this 0402 ferrite bead does on the board The Murata BLM15BX121SN1D is a single-line signal ferrite bead from the EMIFIL® BLM15 series, in an 0402 (1005 Metric) package. It delivers 120 Ohms of impedance at 100 MHz to suppress conducted EMI on a power or signal line, while passing DC up to 600 mA with a maximum DC resistance of 170 mOhm. The 0402 footprint is common enough that it is in most field kits — I have swapped these on a customer site with just tweezers and a standard iron. No hot-air station needed; the orientation is not polarity-sensitive, so it is hard to get wrong. ## Temperature grade and where it fits The wide range means it is a safe pick for designs that see thermal cycling from cold start to full load.","metaTitle":"Murata BLM15BX121SN1D Ferrite Bead, 120 Ohm @ 100 MHz, 0402","metaDescription":"Active Murata BLM15BX121SN1D EMIFIL ferrite bead, 120 Ohms @ 100 MHz, 600 mA, 170 mOhm DCR, 0402 package. Quoted to order.","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":"BLM15BX","Current Rating (Max)":"600mA","Impedance @ Frequency":"120 Ohms @ 100 MHz","Operating Temperature":"-55°C~125°C","DC Resistance (DCR) (Max)":"170mOhm"}},"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/BLM15BX121SN1D/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the BLM15BX121SN1D and check availability?","answer":"The BLM15BX121SN1D is an active Murata part, sourced to order against your BOM quantity."},{"question":"What is the impedance and current rating of the BLM15BX121SN1D?","answer":"It provides 120 Ohms at 100 MHz, with a maximum DC current rating of 600 mA and a DCR of 170 mOhm max. This makes it suitable for suppressing noise on lower-current signal or power rails without excessive voltage drop."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/BLM15BX121SN1D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/BLM15BX121SN1D 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}}