{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ40E3/TR13","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SMAJ40E3-TR13","canonicalUrl":"https://icboms.com/microchip/SMAJ40E3-TR13","factsUrl":"https://icboms.com/api/mcp/products/SMAJ40E3%2FTR13","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology SMAJ40E3/TR13, Zener TVS diode, 40V reverse standoff (typ), 500W peak pulse power, unidirectional, DO-214AC (SMA) package, Tape & Reel","salesMarkdown":"## Transient suppressor for 40V rails Its 44.4V minimum breakdown voltage and 71.4V maximum clamping at 7A peak pulse current define the protection window — the rail must tolerate the clamp voltage without secondary breakdown. ## Clamp voltage and pulse current At the 40V reverse standoff, the diode draws negligible leakage current. When a transient exceeds the 44.4V breakdown threshold, it conducts and clamps to 71.4V maximum at the rated 7A peak pulse current. The 500W peak pulse rating is the energy limit for a single 10/1000µs pulse — derate for repetitive events or higher ambient temperatures. ## Active production, surface-mount supply","metaTitle":"SMAJ40E3/TR13 Zener TVS Diode – 40V, 500W","metaDescription":"SMAJ40E3/TR13 Zener TVS diode from Microchip Technology. 40V reverse standoff, 500W peak pulse power, DO-214AC (SMA) package. Active lifecycle. Surface mount.","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":"SMAJ40","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AC (SMA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"44.4V","Voltage - Clamping (Max) @ Ipp":"71.4V","Voltage - Reverse Standoff (Typ)":"40V","Current - Peak Pulse (10/1000µs)":"7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7b3ddece4863b4621debe180df56adc8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMAJ40E3%2FTR13/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to SMAJ40E3/TR13 in this Circuit Protection family?","answer":"The base product number SMAJ40 covers multiple suffix variants. The SMAJ40A is a common alternative with the same DO-214AC footprint and identical 40V standoff, but the A suffix typically specifies a tighter breakdown tolerance. Confirm the breakdown voltage window and clamping spec against your design margin before substituting."},{"question":"What is SMAJ40E3/TR13's listed type and package?","answer":"The device type is Zener, packaged in a DO-214AC (SMA) surface-mount case. It is supplied on Tape & Reel for volume assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SMAJ40E3-TR13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SMAJ40E3-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}}