{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACM3225-800-2P-T","brand":"TDK Corporation","brandSlug":"tdk-corporation","productSlug":"ACM3225-800-2P-T","canonicalUrl":"https://icboms.com/tdk-corporation/ACM3225-800-2P-T","factsUrl":"https://icboms.com/api/mcp/products/ACM3225-800-2P-T","rawCanonicalId":null},"summary":{"shortDescription":"TDK ACM series, Signal Line common-mode filter, ACM3225-800-2P-T, 1210 (3225 Metric) 4-lead SMD, 80 Ohms @ 100 MHz, 400 mA, 20 VDC, 150 mOhm DCR max.","salesMarkdown":"## 80 Ω at 100 MHz — common-mode attenuation on a differential pair The TDK ACM3225-800-2P-T is a 2-line signal-line common-mode filter from the ACM series, packaged in a 1210 (3225 Metric) footprint with 4 leads for surface-mount assembly. Its headline rating is 80 Ohms impedance at 100 MHz — the frequency where conducted EMI from switching regulators and digital clocks typically couples onto differential signal pairs. At that impedance, the filter presents a high series impedance to common-mode currents while leaving the differential signal largely unaffected, so it cleans up the line without degrading the data eye. ## 400 mA current ceiling and 150 mOhm DCR — the insertion-loss trade-off Rated for 400 mA continuous DC and 20 VDC maximum, with a maximum DC resistance of 150 mOhm. The DCR times the square of the load current gives the self-heating: at 400 mA, I²R dissipation is 24 mW, negligible for the 1210 body, but the voltage drop across the filter at full current is 60 mV — a consideration if the downstream rail has tight tolerance. The 20 VDC rating limits it to low-voltage supply rails and signal lines; it is not a power-line filter. ## Obsolete — sourcing through independent channels TDK lists the ACM3225-800-2P-T as obsolete. No pin-compatible direct replacement from TDK is documented, so a board-spin or a parametric search for a 1210 2-line common-mode filter with matching impedance and current rating is the migration path for new designs. ## Temperature grade and board-fit Operating temperature range is -25°C to 85°C — a commercial/industrial band that covers most indoor equipment and telecom enclosures but not under-hood automotive or extended industrial ambient above 85°C. The 1210 (3225 Metric) 4-lead package is a standard SMD footprint; reflow profile follows the common JEDEC J-STD-020 for a component of this size.","metaTitle":"TDK ACM3225-800-2P-T Signal Line EMI Filter","metaDescription":"TDK ACM3225-800-2P-T 2-line common-mode filter, 80 Ohms @ 100 MHz, 400 mA, 20 VDC, 1210 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["EMI Filters & Ferrite Beads"],"specifications":{"Mfr":"TDK Corporation","Series":"ACM","Package":"Tape & Reel (TR)","Ratings":"-","Features":"-","Filter Type":"Signal Line","Height (Max)":"0.091\\\" (2.30mm)","Mounting Type":"Surface Mount","Package / Case":"1210 (3225 Metric), 4 Leads","Product Status":"Obsolete","Approval Agency":"-","Number of Lines":"2","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Voltage Rating - AC":"-","Voltage Rating - DC":"20V","Current Rating (Max)":"400mA","Impedance @ Frequency":"80 Ohms @ 100 MHz","Operating Temperature":"-25°C ~ 85°C","DC Resistance (DCR) (Max)":"150mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e1ddaec4be7d242bf0d9dad9af2317f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the ACM3225-800-2P-T and how is it quoted?","answer":"The ACM3225-800-2P-T is obsolete from TDK."},{"question":"What does 80 Ohms @ 100 MHz mean for my signal line?","answer":"At 100 MHz, the filter presents 80 Ohms of common-mode impedance. On a differential pair carrying a 100 MHz clock or a high-speed data line, this impedance attenuates common-mode noise coupled from nearby switching supplies or digital busses without materially affecting the differential signal swing. The filter is intended for signal lines, not power rails."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/tdk-corporation/ACM3225-800-2P-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/tdk-corporation/ACM3225-800-2P-T 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}}