{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BLM15AX221SN1D","brand":"Murata Electronics","brandSlug":"murata-electronics","productSlug":"BLM15AX221SN1D","canonicalUrl":"https://icboms.com/murata-electronics/BLM15AX221SN1D","factsUrl":"https://icboms.com/api/mcp/products/BLM15AX221SN1D","rawCanonicalId":null},"summary":{"shortDescription":"Murata Electronics EMIFIL® BLM15 series ferrite bead, 0402 (1005 metric) package, 220 Ohms @ 100 MHz, 600 mA, 180 mOhm DCR, surface mount.","salesMarkdown":"## 220 Ohm @ 100 MHz — board-level noise suppression The BLM15AX221SN1D: Part of Murata's EMIFIL® BLM15 series, this single-line ferrite bead delivers 220 Ohms impedance at 100 MHz — the frequency where most conducted EMI from switching regulators and digital clocks lands. At that impedance, it attenuates the noise peak by roughly 20 dB into a 50-Ohm system, enough to knock down a failing radiated-emissions margin without a board spin. Rated for 600 mA continuous with a maximum DC resistance of 180 mOhm. At full rated current, the self-heating from I²R loss is about 65 mW — negligible in a 0402 body, but the voltage drop across the bead (108 mV at 600 mA) matters if the downstream rail has tight regulation. Spans -55°C to +125°C, so it stays in the circuit through thermal cycling from cold-soak to under-hood ambient. The 0402 footprint (1.00 mm x 0.55 mm) fits dense layouts where a larger 0603 would crowd the bypass caps.","metaTitle":"Murata BLM15AX221SN1D Ferrite Bead, 220 Ohm @ 100 MHz, 0402","metaDescription":"Murata BLM15AX221SN1D ferrite bead, 220 Ohm impedance at 100 MHz, 600 mA rating, 0402 package, active production. Sourced 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":"-","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":"BLM15AX","Current Rating (Max)":"600mA","Impedance @ Frequency":"220 Ohms @ 100 MHz","Operating Temperature":"-55°C ~ 125°C","DC Resistance (DCR) (Max)":"180mOhm"}},"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/BLM15AX221SN1D/alternatives.json"},"ai":{"faq":[{"question":"What is the impedance of BLM15AX221SN1D at 100 MHz?","answer":"220 Ohms at 100 MHz, which is the typical frequency for conducted EMI from switching converters and digital clocks."},{"question":"What is the current rating and DC resistance of BLM15AX221SN1D?","answer":"Rated for 600 mA continuous with a maximum DC resistance of 180 mOhm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/murata-electronics/BLM15AX221SN1D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/murata-electronics/BLM15AX221SN1D 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}}