{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ20CE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ20CE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ20CE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ20CE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ20CE3/TR13, Zener TVS Diode, 1 Bidirectional Channel, 20V Reverse Standoff, 500W Peak Pulse Power, DO-214AC (SMA) Package, Tape & Reel","salesMarkdown":"Its 22.2V minimum breakdown voltage means it starts conducting just above the 20V reverse standoff, and the 35.8V clamping voltage limits the spike seen by the protected load. ## Key ratings that drive the BOM decision The 20V reverse standoff matches a 20V DC bus or a 12V-to-20V converter output — the TVS sits across the rail and stays off until a transient exceeds that level. The 22.2V minimum breakdown gives a 2.2V margin above the rail, enough to avoid nuisance clamping from normal ripple. The 35.8V clamping voltage at 13.9A peak pulse current is the worst-case voltage the downstream components must survive; a 40V-rated capacitor or IC on that rail has adequate headroom. The single bidirectional channel means one device protects both polarities on a signal pair or a DC rail that sees reverse transients. The DO-214AC (SMA) package is a widely used footprint shared across many TVS families, making second-sourcing straightforward if a BOM alternative is needed later.","metaTitle":"SMAJ20CE3/TR13 TVS Diode – 20V, 500W, DO-214AC – Microchip","metaDescription":"SMAJ20CE3/TR13 Zener TVS, 20V reverse standoff, 500W peak pulse, DO-214AC (SMA). Active production, -65°C to 150°C. 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":"SMAJ20","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)":"22.2V","Voltage - Clamping (Max) @ Ipp":"35.8V","Voltage - Reverse Standoff (Typ)":"20V","Current - Peak Pulse (10/1000µs)":"13.9A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1950","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7b3ddece4863b4621debe180df56adc8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can SMAJ20CE3/TR13 replace SMAJ20A?","answer":"Both parts are in the same SMAJ family with a 20V reverse standoff and 500W peak pulse rating in the DO-214AC package. The SMAJ20CE3/TR13 is a bidirectional device, while the SMAJ20A is unidirectional. If the application requires bidirectional clamping, the SMAJ20CE3/TR13 is a direct fit; if unidirectional is needed, the polarity difference matters. Confirm the polarity requirement before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ20CE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ20CE3-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}}