{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMBJ78CA-13","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMBJ78CA-13","canonicalUrl":"https://icboms.com/diodes-inc/SMBJ78CA-13","factsUrl":"https://icboms.com/api/mcp/products/SMBJ78CA-13","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMBJ series bidirectional TVS diode, Zener type, 78V reverse standoff, 600W peak pulse power, DO-214AA SMB surface mount package, Tape & Reel.","salesMarkdown":"## 78V standoff, 126V clamp — the protection window for 48V and 60V rails The SMBJ78CA-13 is a bidirectional Zener-type TVS diode from the SMBJ series, designed to clamp transients on DC power buses. With a 78V reverse standoff voltage and a minimum breakdown of 86.7V, it sits above nominal 48V and 60V rails without conducting during normal operation. For shorter transients (8/20µs, common in ESD or lightning), the device can absorb significantly more peak power before the junction temperature limit is reached. ## DO-214AA SMB — rework-friendly footprint Housed in the DO-214AA (SMB) package, the SMBJ78CA-13 is a surface-mount part with a body that handles a hot-air rework cycle without the pad lifting issues of smaller SOD packages. The SMB footprint is large enough to hand-solder with a fine tip if needed, and the cathode band (or bidirectional marking) is clearly moulded — no guessing pin 1 orientation on a bidirectional part. The wide range means the leakage current at 78V standoff stays manageable even at high ambient — a key factor when the TVS sits on a hot PCB near a power supply. ## Active production, sourced per RFQ The base product number is SMBJ78, meaning the unidirectional variant shares the same breakdown and clamping specs but with a single-direction polarity. For bidirectional protection on a single line, the CA suffix is the correct choice — no need for two diodes back-to-back.","metaTitle":"SMBJ78CA-13 Diodes Inc TVS, 78V Bidirectional, 600W, SMB","metaDescription":"SMBJ78CA-13 bidirectional TVS diode, 78V standoff, 600W peak pulse power, DO-214AA SMB. 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":"SMBJ","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SMBJ78","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMB","Voltage - Breakdown (Min)":"86.7V","Voltage - Clamping (Max) @ Ipp":"126V","Voltage - Reverse Standoff (Typ)":"78V","Current - Peak Pulse (10/1000µs)":"4.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5082cff9e06e9e3934f006f5710ece61.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the SMBJ78CA-13 used for?","answer":"It is a bidirectional TVS diode for general-purpose transient voltage suppression on DC power buses or signal lines where the normal operating voltage is 78V or below. Typical applications include 48V telecom power supplies, 60V industrial rails, and automotive 24V systems where a 78V standoff provides margin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMBJ78CA-13","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/SMBJ78CA-13 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}}