{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BLM15BD221SN1D","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"BLM15BD221SN1D","canonicalUrl":"https://icboms.com/murata-electronics/BLM15BD221SN1D","factsUrl":"https://icboms.com/api/mcp/products/BLM15BD221SN1D","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics EMIFIL® BLM15 series, Signal Line Ferrite Bead, 0402 (1005 Metric), 220 Ohms @ 100 MHz, 300 mA, 400 mOhm DCR, -55°C ~ 125°C.","salesMarkdown":"## Signal-line noise suppression in a 0402 footprint The BLM15BD221SN1D is a single-line ferrite bead from Murata's EMIFIL® BLM15 series, delivering 220 Ohms impedance at 100 MHz to suppress conducted EMI on signal traces. ## Impedance, current, and DCR — the fit decision The 220 Ohm impedance at 100 MHz is the attenuation peak for common-mode noise in the 30-300 MHz band — typical for clock lines, data buses, and switching-regulator output rails. The 300 mA current rating sets the load ceiling: a 3.3 V rail drawing 250 mA stays within margin, but a 1.8 V rail at the same current pushes the DC bias closer to the ferrite's saturation knee, reducing effective impedance. Maximum DC resistance is 400 mOhm. At 300 mA, the self-heating from I²R loss is 36 mW — negligible in still air, but worth checking if the bead sits next to a hot regulator or in a confined enclosure with limited convection. ## Temperature grade and storage The 0402 body is not moisture-sensitive per standard JEDEC levels — store the reels in ambient conditions, no dry-bake required before reflow. Lifecycle status is Active per Murata's current product listing.","metaTitle":"Murata BLM15BD221SN1D Ferrite Bead, 220 Ohms @ 100 MHz","metaDescription":"Murata BLM15BD221SN1D EMIFIL® ferrite bead, 220 Ohms @ 100 MHz, 300 mA, 0402 package. Active production, sourced per RFQ.","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":"BLM15BD","Current Rating (Max)":"300mA","Impedance @ Frequency":"220 Ohms @ 100 MHz","Operating Temperature":"-55°C ~ 125°C","DC Resistance (DCR) (Max)":"400mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/73c2e560dc04bcd20af9d3bc02fbbc8b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the impedance of BLM15BD221SN1D at 100 MHz?","answer":"220 Ohms at 100 MHz. This is the rated impedance peak for the signal-line filter type, suited for suppressing conducted EMI in the 30-300 MHz range on digital or analog signal traces."},{"question":"What package does BLM15BD221SN1D come in?","answer":"0402 (1005 metric) surface-mount package, 1.00 mm x 0.55 mm footprint, 0.55 mm seated height. Supplied on tape and reel (cut tape available)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/BLM15BD221SN1D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/BLM15BD221SN1D 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}}