{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CM1213A-01SO","brand":"onsemi","brandSlug":"onsemi","productSlug":"CM1213A-01SO","canonicalUrl":"https://icboms.com/onsemi/CM1213A-01SO","factsUrl":"https://icboms.com/api/mcp/products/CM1213A-01SO","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CM1213A-01SO, Steering (Rail to Rail) ESD protection diode, 3.3V reverse standoff, 10V typical clamping, SOT-23-3 package, Tape & Reel.","salesMarkdown":"## Rail-to-rail steering diode for 3.3V data lines The CM1213A-01SO is a single-channel steering (rail-to-rail) ESD protection diode from onsemi, designed to clamp transients on 3.3V signal or power rails. Its 10V typical clamping voltage at 1A (8/20µs) keeps downstream ICs within safe limits during an ESD event. Packaged in a standard SOT-23-3 (TO-236) footprint, it suits general-purpose ESD protection on USB, HDMI, or other high-speed interfaces where low capacitance is needed to preserve signal integrity. ## Last Buy — plan your final order onsemi has marked the CM1213A-01SO as Last Buy. This is the final production window — once inventory is exhausted, the part will not be manufactured again. Procurement should commit to a lifetime buy quantity against the BOM forecast. ## SOT-23-3 footprint and layout fit The SOT-23-3 package (also known as TO-236 or SC-59) is a three-lead surface-mount package. It is a common footprint shared by many ESD diodes and small-signal transistors, making board-level replacement straightforward if the board was laid out for this package.","metaTitle":"CM1213A-01SO onsemi Rail-to-Rail ESD Protection, Last Buy","metaDescription":"CM1213A-01SO steering (rail-to-rail) diode, 3.3V reverse standoff, SOT-23-3. Last Buy from onsemi. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Steering (Rail to Rail)","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Last Time Buy","lifecycle_stage":"eol_hot","Power - Peak Pulse":"-","Base Product Number":"CM1213","Operating Temperature":"-40°C ~ 85°C (TA)","Power Line Protection":"Yes","Capacitance @ Frequency":"-","Supplier Device Package":"SOT-23-3 (TO-236)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"6V","Voltage - Clamping (Max) @ Ipp":"10V (Typ)","Voltage - Reverse Standoff (Typ)":"3.3V","Current - Peak Pulse (10/1000µs)":"1A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cba42dc8f96b34d1713c5f4501d42b20.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the CM1213A-01SO obsolete?","answer":"It is in Last Buy status from onsemi — the final production run is active. Once stock is depleted, no further manufacturing is planned. This is the time to secure your lifetime buy."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CM1213A-01SO","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CM1213A-01SO when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:22:03.049Z","lastPublished":"2026-07-17T20:22:03.049Z","indexable":true}}