{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACM2012E-121-2P-T01","brand":"TDK Corporation","brandSlug":"tdk-corporation","productSlug":"ACM2012E-121-2P-T01","canonicalUrl":"https://icboms.com/tdk-corporation/ACM2012E-121-2P-T01","factsUrl":"https://icboms.com/api/mcp/products/ACM2012E-121-2P-T01","rawCanonicalId":null},"summary":{"shortDescription":"TDK Corporation ACM-E series signal line EMI filter, ACM2012E-121-2P-T01, 120 Ohms @ 100 MHz, 300 mA, 50 VDC, 0805 SMD, 2-line.","salesMarkdown":"## What this 0805 common-mode filter does on the line The TDK ACM2012E-121-2P-T01 is a 2-line signal line EMI filter from the ACM-E series, packaged in an 0805 surface-mount footprint with a horizontal 4-pad layout. It presents 120 Ohms of common-mode impedance at 100 MHz, sized to knock down conducted noise on differential signal pairs without loading the line. Rated for 300 mA continuous current and 50 VDC, with a maximum DC resistance of 450 mOhm — the DCR sets the IR drop and self-heating at full load, so the 300 mA ceiling is the practical limit before the temperature rise eats into the 85°C ambient headroom. ## Obsolete — sourcing through surplus and last-time-buy channels TDK has marked the ACM2012E-121-2P-T01 as obsolete.","metaTitle":"TDK ACM2012E-121-2P-T01 Signal Line Filter","metaDescription":"TDK ACM2012E-121-2P-T01 signal line EMI filter, 120 Ohms @ 100 MHz, 300 mA, 50 VDC, 0805 package. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["EMI Filters & Ferrite Beads"],"specifications":{"Mfr":"TDK Corporation","Series":"ACM-E","Package":"Tape & Reel (TR)","Ratings":"-","Features":"-","Filter Type":"Signal Line","Height (Max)":"0.043\\\" (1.10mm)","Mounting Type":"Surface Mount","Package / Case":"Horizontal, 4 PC Pad","Product Status":"Obsolete","Approval Agency":"-","Number of Lines":"2","lifecycle_stage":"unknown","Size / Dimension":"0.079\\\" L x 0.047\\\" W (2.00mm x 1.20mm)","Voltage Rating - AC":"-","Voltage Rating - DC":"50V","Current Rating (Max)":"300mA","Impedance @ Frequency":"120 Ohms @ 100 MHz","Operating Temperature":"-40°C ~ 85°C","DC Resistance (DCR) (Max)":"450mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6c42ca31ccd317175ee09520b5e01a10.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ACM2012E-121-2P-T01/alternatives.json"},"ai":{"faq":[{"question":"What is the impedance of ACM2012E-121-2P-T01 at 100 MHz?","answer":"120 Ohms at 100 MHz, specified as common-mode impedance for a 2-line signal filter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/tdk-corporation/ACM2012E-121-2P-T01","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/tdk-corporation/ACM2012E-121-2P-T01 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}