{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ51CAE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ51CAE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ51CAE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ51CAE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ51CAE3/TR13, Zener TVS diode, bidirectional, 51V reverse standoff, 500W peak pulse power, DO-214AC (SMA) package, -65°C to 150°C operating range.","salesMarkdown":"## 51V reverse standoff — what it protects This means the protected line can carry up to 51V DC continuously without the diode conducting leakage current. The clamping voltage at peak pulse current is 82.4V, which sets the upper bound the downstream circuitry must survive during a surge event. Rated for 500W peak pulse power per the 10/1000µs waveform, this device handles transient energy typical of inductive load switching or lightning-induced surges on 48V telecom buses and 24V industrial rails with margin. A single bidirectional channel clamps positive and negative transients symmetrically. In AC signal lines or bipolar DC supplies, this replaces two unidirectional TVS diodes back-to-back, saving board area and reducing component count. The breakdown voltage minimum is 56.7V, ensuring the device starts conducting before the clamping limit is reached. Microchip lists the SMAJ51CAE3/TR13 as Active.","metaTitle":"SMAJ51CAE3/TR13 TVS Diode – 51V Bidirectional, 500W","metaDescription":"SMAJ51CAE3/TR13 Zener TVS diode, 51V reverse standoff, 500W peak pulse, 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":"SMAJ51","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)":"56.7V","Voltage - Clamping (Max) @ Ipp":"82.4V","Voltage - Reverse Standoff (Typ)":"51V","Current - Peak Pulse (10/1000µs)":"6.1A"}},"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":"What is the difference between SMAJ51CAE3 and SMAJ51A?","answer":"The SMAJ51CAE3 is a bidirectional device, clamping both positive and negative transients. The SMAJ51A is a unidirectional variant, clamping only one polarity. For AC or bipolar DC lines, the bidirectional version saves a second diode. Both share the same 51V reverse standoff and 500W peak pulse rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ51CAE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ51CAE3-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}}