{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ120CAE3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ120CAE3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ120CAE3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ120CAE3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ120CAE3/TR13, Zener TVS diode, 500W peak pulse power, 120V reverse standoff, bidirectional, DO-214AC (SMA) package, Tape & Reel.","salesMarkdown":"The SMAJ120CAE3/TR13 clamps at 193V max during a surge, limiting the voltage seen by the downstream IC or module. For a 120V nominal rail (reverse standoff), this gives headroom above the operating voltage before the TVS starts conducting. Peak pulse power is rated 500W for the same 10/1000µs waveform. That 500W rating is the product of clamp voltage and peak current — at 193V clamp, the device handles 2.6A peak. For shorter pulses (8/20µs) the power capability is higher, but the datasheet's 10/1000µs rating is the conservative benchmark for most AC-line or DC-bus protection designs. Microchip lists the SMAJ120CAE3/TR13 as Active. That covers cold-start conditions in outdoor telecom cabinets and the self-heating from repetitive surges in industrial control panels. ## DO-214AC (SMA) — reel-ready for pick-and-place Supplied on Tape & Reel, the SMAJ120CAE3/TR13 is ready for automated assembly. The DO-214AC (SMA) body is a two-pin surface-mount package with a cathode band on the unidirectional variant, but the bidirectional version has no polarity mark.","metaTitle":"SMAJ120CAE3/TR13 TVS Diode – 500W, 120V Bidirectional","metaDescription":"Microchip Technology SMAJ120CAE3/TR13 Zener TVS diode, 500W peak pulse power, 120V reverse standoff, bidirectional, DO-214AC (SMA) package. Active lifecycle.","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":"SMAJ120","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)":"133V","Voltage - Clamping (Max) @ Ipp":"193V","Voltage - Reverse Standoff (Typ)":"120V","Current - Peak Pulse (10/1000µs)":"2.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7b3ddece4863b4621debe180df56adc8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SMAJ120CAE3/TR13 bidirectional?","answer":"Yes — it is a single-channel bidirectional Zener TVS diode. It clamps symmetrically in both directions, with a breakdown voltage of 133V min and reverse standoff of 120V. No cathode orientation required on the PCB."},{"question":"What is the peak pulse power of SMAJ120CAE3/TR13?","answer":"Rated 500W peak pulse power for a 10/1000µs waveform. At the 193V max clamp voltage, the corresponding peak pulse current is 2.6A. For shorter pulses the power capability increases, but the 10/1000µs rating is the standard comparison point."},{"question":"What is the difference between SMAJ120CAE3/TR13 and SMAJ120A?","answer":"SMAJ120A is the unidirectional version of the same 120V reverse standoff, 500W TVS. The SMAJ120CAE3/TR13 is bidirectional. Both share the same DO-214AC (SMA) package and 193V clamp voltage. If your circuit sees transients of both polarities on the same line, the bidirectional part saves a diode or a second device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ120CAE3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ120CAE3-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}}