{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BLM15HB121SN1D","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"BLM15HB121SN1D","canonicalUrl":"https://icboms.com/murata-electronics/BLM15HB121SN1D","factsUrl":"https://icboms.com/api/mcp/products/BLM15HB121SN1D","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics EMIFIL®, BLM15 series ferrite bead, BLM15HB121SN1D, 120 Ohms @ 100 MHz, 300 mA, 700 mOhm DCR, 0402 (1005 Metric), Signal Line.","salesMarkdown":"## Active production, 120 Ohm suppression at 100 MHz The BLM15HB121SN1D is an active-production ferrite bead from Murata's EMIFIL® BLM15 series, rated for 120 Ohms impedance at 100 MHz. This is the suppression point where common-mode noise on a signal line sees its highest attenuation — useful for cleaning up a 100 MHz clock or data line where the third harmonic falls in that band. Current rating is 300 mA max, with a DCR of 700 mOhm max. At full rated current the DC drop is 210 mV — budget that into the rail voltage if the bead sits on a power supply line. ## 0402 footprint, -55 to 125°C range The surface-mount footprint matches the common 0402 land pattern — no special pad geometry needed. The impedance curve shifts with temperature — expect the 120 Ohm peak to drop roughly 20 % at 125°C, which is typical for NiZn ferrite material.","metaTitle":"Murata BLM15HB121SN1D Ferrite Bead, 120 Ohms @ 100 MHz","metaDescription":"Active Murata BLM15HB121SN1D ferrite bead, 120 Ohms @ 100 MHz, 300 mA, 700 mOhm DCR, 0402 package, -55 to 125°C. Available 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":"BLM15HB","Current Rating (Max)":"300mA","Impedance @ Frequency":"120 Ohms @ 100 MHz","Operating Temperature":"-55°C ~ 125°C","DC Resistance (DCR) (Max)":"700mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9d0632ea70495a76ae7e2143267b559f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the impedance of BLM15HB121SN1D at 100 MHz?","answer":"The BLM15HB121SN1D provides 120 Ohms impedance at 100 MHz, typical for suppressing noise on signal lines operating near that frequency or its harmonics."},{"question":"What is the maximum DC resistance and current rating?","answer":"Maximum DCR is 700 mOhm, and the maximum current rating is 300 mA. The DC voltage drop at full current is 210 mV, which should be factored into the supply rail budget."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/BLM15HB121SN1D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/BLM15HB121SN1D 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}}