{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ12CE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ12CE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ12CE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ12CE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ12CE3/TR13, Zener TVS diode, 500W peak pulse power, 12V reverse standoff, bidirectional, DO-214AC (SMA) package, Tape & Reel.","salesMarkdown":"The SMAJ12CE3/TR13 is a bidirectional Zener TVS diode from Microchip Technology, rated for 500 W peak pulse power per the 10/1000 µs waveform. It clamps a 12 V nominal rail: reverse standoff at 12 V, breakdown at 13.3 V min, and clamping at 22 V max at the peak current of 22.7 A. Bidirectional means a single device protects both polarities — useful on AC-coupled lines or bipolar supplies where two unidirectional parts would double the footprint. ## What the 500 W rating means for your BOM Peak pulse power of 500 W is the energy-handling ceiling for a 10/1000 µs surge. For a 12 V rail, that translates to 22.7 A peak pulse current. If your application sees transients exceeding that amplitude — for example, a direct lightning surge on an outdoor sensor line — you need a higher-power part in the same SMAJ family (600 W or 1500 W). The 22 V clamping voltage at Ipp sets the maximum voltage the protected IC sees during the surge. A downstream component rated for 25 V minimum withstands this; if your rail runs a 12 V-to-3.3 V LDO, check its absolute max input rating against that 22 V clamp. Microchip lists the SMAJ12CE3/TR13 as Active. No last-time-buy notice, no phase-out date. Junction temperature range from -65°C to 150°C covers avionics cold-soak, outdoor telecom enclosures, and under-hood automotive ambient. The 150°C Tj max is the junction limit; derate peak pulse power above 25°C per the datasheet curve. DO-214AC (SMA) has a copper pad on the cathode tab — for a bidirectional device, both terminals are equivalent, but the pad area still influences thermal resistance. A 1 oz copper pour of at least 30 mm² per terminal keeps the junction temperature rise in check during repetitive surges.","metaTitle":"SMAJ12CE3/TR13 – Microchip 500W Bidirectional Zener TVS","metaDescription":"Microchip SMAJ12CE3/TR13 Zener TVS, 500W peak pulse power, 12V standoff, bidirectional, DO-214AC (SMA). Active production. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Microchip Technology","Type":"Zener","Series":"-","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"500W","Base Product Number":"SMAJ12","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AC (SMA)","Voltage - Breakdown (Min)":"13.3V","Voltage - Clamping (Max) @ Ipp":"22V","Voltage - Reverse Standoff (Typ)":"12V","Current - Peak Pulse (10/1000µs)":"22.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7b3ddece4863b4621debe180df56adc8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SMAJ12CE3/TR13 bidirectional?","answer":"Yes, it has 1 bidirectional channel. A single device clamps both positive and negative transients, saving board space compared to two unidirectional diodes."},{"question":"What is the peak pulse power of SMAJ12CE3/TR13?","answer":"At that rating the peak pulse current is 22.7 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ12CE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ12CE3-TR13 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}