{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACM2012E-121-2P-T00","brand":"TDK Corporation","brandSlug":"tdk-corporation","productSlug":"ACM2012E-121-2P-T00","canonicalUrl":"https://icboms.com/tdk-corporation/ACM2012E-121-2P-T00","factsUrl":"https://icboms.com/api/mcp/products/ACM2012E-121-2P-T00","rawCanonicalId":null},"summary":{"shortDescription":"TDK Corporation ACM-E series signal-line common-mode filter, ACM2012E-121-2P-T00, 2-line, 120 Ohms @ 100 MHz, 300 mA, 50 VDC, 0805 footprint, horizontal 4-pad, Tape & Reel.","salesMarkdown":"## 120 Ohms at 100 MHz — the common-mode stopband for signal lines The TDK ACM2012E-121-2P-T00 is a two-line signal-line common-mode filter from the ACM-E series, delivering 120 Ohms impedance at 100 MHz — the standard reference frequency for EMI suppression on differential pairs and I/O lines. ## Obsolete — sourcing through independent channels TDK has marked the ACM2012E-121-2P-T00 as obsolete. For a BOM already qualified to this footprint and impedance target, the existing stock is the procurement path; there is no pin-compatible drop-in replacement from TDK with the same 120 Ohm @ 100 MHz characteristic in the ACM-E series. ## 0805 footprint, horizontal 4-pad — fits standard signal-line layouts The two-line construction is designed for differential signal pairs — USB, CAN, LVDS, or Ethernet — where common-mode noise on the pair needs attenuation without affecting the differential signal.","metaTitle":"TDK ACM2012E-121-2P-T00 Signal Line Choke, 120 Ohms, 300mA","metaDescription":"TDK ACM2012E-121-2P-T00 common-mode filter, 120 Ohms @ 100 MHz, 300mA, 50V, 2-line. Obsolete — sourced to order against RFQ through independent distribution.","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6c42ca31ccd317175ee09520b5e01a10.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/tdk-corporation/ACM2012E-121-2P-T00","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-T00 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}}