{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6278AHE3_A/C","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6278AHE3_A-C","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278AHE3_A-C","factsUrl":"https://icboms.com/api/mcp/products/1N6278AHE3_A%2FC","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive AEC-Q101 TransZorb® TVS, 1N6278AHE3_A/C, 1500W peak pulse, 17.1V standoff, 27.7V clamping, 54.2A peak pulse, DO-201AA axial, through-hole.","salesMarkdown":"## 1500W peak pulse — what that means in the harness The 1N6278AHE3_A/C: A 1500W peak pulse rating at 10/1000 µs defines the TVS role in the automotive 12 V and 24 V harness — it must clamp load-dump and inductive transients fast enough that the downstream ECU or module never sees more than its transient withstand ceiling. The 27.7V maximum clamping voltage at 54.2A peak pulse current tells you what the protected circuit actually sees; the part must absorb that energy without going into thermal runaway. The reverse standoff typ of 17.1V sets the bias on the part during normal operation — it sits off, invisible to the circuit, until a transient pushes it above breakdown. ## The standoff window — 17.1V to 19V minimum breakdown The minimum breakdown of 19V gives 1.9V of margin above the 17.1V standoff typ — enough that normal 12V supply variations and cold-crank dips do not trigger conduction. The part conducts only when a genuine transient exceeds the breakdown threshold. ## AEC-Q101 — the qualification that matters for automotive The AEC-Q101 qualifier is the differentiator from industrial or commercial TVS diodes. It means the part has passed the automotive stress sequence — humidity, temperature cycling, surge life — and is traceable to PPAP documentation. For under-hood or body-control modules that face engine-bay thermal profiles, the -55°C to 175°C junction temperature range gives headroom through cold start and hot soak without derating to zero.","metaTitle":"Vishay 1N6278AHE3_A/C, 1500W TVS Diode","metaDescription":"1500W peak pulse TVS diode, 27.7V clamping at 54.2A, AEC-Q101 automotive. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"Automotive, AEC-Q101, TransZorb®","Package":"Tape & Reel (TR)","Applications":"Automotive","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1N6278","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"19V","Voltage - Clamping (Max) @ Ipp":"27.7V","Voltage - Reverse Standoff (Typ)":"17.1V","Current - Peak Pulse (10/1000µs)":"54.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5346","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6278AHE3_A%2FC/alternatives.json"},"ai":{"faq":[{"question":"What is the 1N6278AHE3_A/C used for?","answer":"The DO-201AA axial package mounts through-hole on the PCB."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278AHE3_A-C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278AHE3_A-C 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}}