{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ78CAQ-13-F","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMAJ78CAQ-13-F","canonicalUrl":"https://icboms.com/diodes-inc/SMAJ78CAQ-13-F","factsUrl":"https://icboms.com/api/mcp/products/SMAJ78CAQ-13-F","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMAJ78CAQ-13-F, Automotive AEC-Q101 Zener TVS, 400W peak pulse, 78V reverse standoff, 126V clamp, bidirectional, DO-214AC SMA, active.","salesMarkdown":"## Clamping voltage and peak pulse — what the ratings mean for the supply rail The SMAJ78CAQ-13-F: With a 78V reverse standoff (Vrwm), this TVS sits on a nominal 78V DC bus or a 48V automotive rail (e.g., mild-hybrid 48V systems) without conducting leakage. When a transient exceeds 86.7V breakdown (Vbr min), the device clamps to 126V max — the peak voltage the downstream circuitry must survive. The 400W peak pulse rating at 10/1000µs means it absorbs high-energy surges (e.g., load dump or alternator field decay) but is not intended for repetitive overvoltage events typical of continuous power-line clamping. AEC-Q101 grade ensures the part meets automotive PPAP documentation, reliability stress tests, and traceability requirements for OEM audit. The AEC-Q101 qualification (Automotive series) is embedded in the part number, so the OE auditor expects PPAP-level documentation from the supply chain. The part is single-channel, bidirectional (one device protects both polarities), and does not include power line protection (: No), meaning it is sized for signal or low-power auxiliary rail protection, not the main battery bus.","metaTitle":"Diodes Inc SMAJ78CAQ-13-F AEC-Q101 TVS, 78V, 126V Clamp","metaDescription":"Automotive-grade Zener TVS, AEC-Q101 qualified, 400W peak pulse, 78V reverse standoff, 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":"Diodes Incorporated","Type":"Zener","Series":"Automotive, AEC-Q101","Package":"Tape & Reel (TR)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMA","Voltage - Breakdown (Min)":"86.7V","Voltage - Clamping (Max) @ Ipp":"126V","Voltage - Reverse Standoff (Typ)":"78V","Current - Peak Pulse (10/1000µs)":"3.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1154","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/34f8b69d3d41ce3a7e5d6d3f2b7ec8e2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to SMAJ78CAQ-13-F?","answer":"Within the same DO-214AC footprint, parametric equivalents from other brands (e.g., Littelfuse, Vishay) may match the 78V standoff and 400W peak pulse, but pin compatibility is package-identical — the die and clamping performance must be verified for the specific transient profile."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMAJ78CAQ-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/SMAJ78CAQ-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}}