{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ78AQ-13-F","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"SMCJ78AQ-13-F","canonicalUrl":"https://icboms.com/diodes-inc/SMCJ78AQ-13-F","factsUrl":"https://icboms.com/api/mcp/products/SMCJ78AQ-13-F","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated SMCJ78AQ-13-F Zener TVS diode, 1500W peak pulse power, 78V reverse standoff, 126V clamping, unidirectional, DO-214AB SMC package, Tape & Reel.","salesMarkdown":"## 1.5 kW TVS in a DO-214AB footprint The SMCJ78AQ-13-F: The 78 V reverse standoff voltage means it sits across a 78 V DC rail without conducting leakage; clamping occurs at 126 V maximum when the transient hits. The 11.4 A peak pulse current is the current the device shunts during that clamped event — the 1500 W rating is the product of clamp voltage and peak current at the test waveform. The junction operates from -55°C to 150°C, covering industrial and automotive ambient ranges with margin. ## Clamping voltage and breakdown margin The minimum breakdown voltage is 86.7 V, which sets the guard band above the 78 V standoff. A 48 V or 60 V rail protected by this device sees no conduction during normal operation; a transient that drives the rail above 86.7 V triggers avalanche breakdown and the diode clamps to 126 V. The 39.3 V difference between standoff and clamp is the voltage the downstream circuitry must survive — a DC-DC converter with a 100 V input rating has headroom. Power line protection is marked as No, confirming this is a signal- or low-power-rail TVS, not a primary AC mains protector. The unidirectional configuration biases the cathode to the protected rail and anode to ground; reverse-polarity events forward-bias the junction and conduct without clamping.","metaTitle":"SMCJ78AQ-13-F Diodes Inc TVS, 1.5kW, 78V Standoff, DO-214AB","metaDescription":"SMCJ78AQ-13-F Zener TVS diode, 1500W peak pulse power, 78V reverse standoff, 126V clamping. Active production, DO-214AB SMC 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)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"86.7V","Voltage - Clamping (Max) @ Ipp":"126V","Voltage - Reverse Standoff (Typ)":"78V","Current - Peak Pulse (10/1000µs)":"11.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2552","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a7bf25a78de51cddef331c6d49312185.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/SMCJ78AQ-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/SMCJ78AQ-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}}