{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ40AQ-13-F","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMAJ40AQ-13-F","canonicalUrl":"https://icboms.com/diodes-inc/SMAJ40AQ-13-F","factsUrl":"https://icboms.com/api/mcp/products/SMAJ40AQ-13-F","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMAJ40AQ-13-F Zener TVS diode, Automotive Grade, AEC-Q101, 400W peak pulse, 40V reverse standoff, DO-214AC SMA package, Tape & Reel.","salesMarkdown":"The SMAJ40AQ-13-F: It clamps transients at 64.5V maximum, with a 40V reverse standoff voltage and a 44.4V minimum breakdown point — this defines the protection window for a 40V nominal rail. The DO-214AC SMA package is a standard surface-mount footprint — the same pad layout as many other 400W TVS diodes, making it a drop-in candidate for existing board layouts. The -55°C to 150°C junction temperature range covers the full automotive thermal envelope, including hot-soak conditions near the engine bay. ## Clamping voltage and pulse current — what the numbers mean on the bench At 64.5V maximum clamping, the TVS holds the transient below the absolute maximum rating of most 40V-rated downstream ICs. The 6.2A peak pulse current at the 10/1000µs waveform tells you the surge energy it can absorb — a 40V rail hit with a 300W transient pulse stays within the 400W rating. Power line protection is marked as 'No' — this is a unidirectional Zener TVS, not a bidirectional or steering-diode array. It clamps one polarity (positive transients above breakdown) and conducts like a forward-biased diode on negative swings. For AC-coupled or bipolar lines, you would need a bidirectional part.","metaTitle":"SMAJ40AQ-13-F Diodes Zener TVS, 400W, AEC-Q101, SMA","metaDescription":"SMAJ40AQ-13-F Diodes Incorporated Zener TVS diode, 400W peak pulse, 40V standoff, AEC-Q101 automotive grade. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diodes Incorporated","Type":"Zener","Grade":"Automotive","Series":"-","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Part Status":"Active","Applications":"-","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AC, SMA","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SMAJ40","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMA","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"44.4V","Voltage - Clamping (Max) @ Ipp":"64.5V","Voltage - Reverse Standoff (Typ)":"40V","Current - Peak Pulse (10/1000µs)":"6.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/34f8b69d3d41ce3a7e5d6d3f2b7ec8e2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the SMAJ40AQ-13-F or check stock?","answer":"Submit a quote request for your target quantity."},{"question":"What compliance documentation does Diodes Incorporated provide for the SMAJ40AQ-13-F?","answer":"As an AEC-Q101 qualified part, the SMAJ40AQ-13-F comes with automotive-grade reliability documentation. Diodes Incorporated typically provides RoHS and REACH compliance certificates, along with the AEC-Q101 test report. Specific documents are available upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMAJ40AQ-13-F","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/SMAJ40AQ-13-F 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}}