{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACM2012-121-2P-T002","brand":"TDK Corporation","brandSlug":"tdk-corporation","productSlug":"ACM2012-121-2P-T002","canonicalUrl":"https://icboms.com/tdk-corporation/ACM2012-121-2P-T002","factsUrl":"https://icboms.com/api/mcp/products/ACM2012-121-2P-T002","rawCanonicalId":null},"summary":{"shortDescription":"TDK ACM series common mode filter, ACM2012-121-2P-T002, 120 Ohms @ 100 MHz, 370 mA, 50 VDC, 0805 SMD, 2-line, signal line filter.","salesMarkdown":"## 120 Ohm common mode choke for signal lines The ACM2012-121-2P-T002: It targets signal line filtering — the 120 Ohms impedance at 100 MHz knocks down common mode noise on differential pairs without attenuating the differential signal itself. The 50 VDC voltage rating gives headroom for industrial control bus lines running at 24 V. This means the part is still orderable for existing production but is not intended for new board spins — TDK will eventually issue an EOL notice. New designs should evaluate a pin-compatible common mode filter from the same ACM 0805 family with matching 2-line, 120 Ohm, 370 mA+ rating. ## 0805 footprint — board integration notes Surface mount in a Horizontal, 4 PC Pad package — the four-pad layout routes each differential line through one winding, with the two coils sharing the common ferrite core. Operating temperature range is -40°C to +85°C, covering indoor telecom and industrial control environments.","metaTitle":"TDK ACM2012-121-2P-T002 Common Mode Filter, 120 Ohms","metaDescription":"TDK ACM2012-121-2P-T002 common mode filter, 120 Ohms @ 100 MHz, 370 mA, 50 VDC, 0805 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["EMI Filters & Ferrite Beads"],"specifications":{"Mfr":"TDK Corporation","Series":"ACM","Package":"Tape & Reel (TR) Cut Tape (CT)","Ratings":"-","Features":"-","Filter Type":"Signal Line","Height (Max)":"0.051\\\" (1.30mm)","Mounting Type":"Surface Mount","Package / Case":"Horizontal, 4 PC Pad","Product Status":"Not For New Designs","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)":"370mA","Impedance @ Frequency":"120 Ohms @ 100 MHz","Operating Temperature":"-40°C ~ 85°C","DC Resistance (DCR) (Max)":"220mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a359cecc9cbf25f118a2d8beb6500477.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ACM2012-121-2P-T002/alternatives.json"},"ai":{"faq":[{"question":"What is the impedance of ACM2012-121-2P-T002 at 100 MHz?","answer":"120 Ohms at 100 MHz, measured as common mode impedance. This is the standard rating for suppressing conducted EMI in the 100 MHz band — typical for USB 2.0, Ethernet, or LVDS signal lines."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/tdk-corporation/ACM2012-121-2P-T002","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/tdk-corporation/ACM2012-121-2P-T002 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}}