{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMAJ78CA-13-F","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMAJ78CA-13-F","canonicalUrl":"https://icboms.com/diodes-inc/SMAJ78CA-13-F","factsUrl":"https://icboms.com/api/mcp/products/SMAJ78CA-13-F","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMAJ78CA-13-F Zener TVS diode, bidirectional, 400W peak pulse power, 78V reverse standoff, 126V clamping, DO-214AC SMA package, Tape & Reel.","salesMarkdown":"## 78 V standoff, 126 V clamp — the protection window for 48–72 V rails The SMAJ78CA-13-F: Its 78 V reverse standoff voltage and 126 V clamping point make it a fit for protecting 48 V to 72 V DC buses, industrial signal lines, or telecom power feeds where the normal operating voltage sits below 78 V and the transient must be clamped before reaching 126 V. With a single bidirectional channel, the part clamps both polarities in one package — no need to orient the diode on the board, which simplifies layout for AC-coupled or floating signal pairs. ## DO-214AC (SMA) — the standard surface-mount TVS footprint Housed in the DO-214AC (SMA) package, the SMAJ78CA-13-F uses the same 2-lead footprint as the rest of the SMAJ family. The package is rated for surface-mount assembly and supports the -55°C to 150°C junction temperature range — wide enough for industrial enclosures and under-hood automotive zones where ambient heat soaks the PCB. The 400 W peak pulse rating is tested with the standard 10/1000 µs waveform. At the clamping voltage of 126 V, the peak pulse current is 2.2 A — this tells you the surge the part can absorb before the junction exceeds its thermal limit. For shorter transients (8/20 µs), the effective power capability is higher, but the datasheet's derating curve should guide the margin.","metaTitle":"SMAJ78CA-13-F Diodes Inc TVS, 400W, 78V Standoff, DO-214AC","metaDescription":"SMAJ78CA-13-F bidirectional Zener TVS from Diodes Inc, 400W peak pulse, 78V standoff, 126V clamp. Active production, DO-214AC SMA package. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diodes Incorporated","Type":"Zener","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AC, SMA","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"400W","Base Product Number":"SMAJ78","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)":"2.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0270111b098582f24c0b7d28e81a77ac.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy SMAJ78CA-13-F and how is it quoted?","answer":"SMAJ78CA-13-F is sourced through independent and authorized distribution channels."},{"question":"What package does SMAJ78CA-13-F come in?","answer":"It is supplied in the DO-214AC (SMA) surface-mount package, available in Tape & Reel (TR) or Cut Tape (CT) options."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMAJ78CA-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/SMAJ78CA-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}}