{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6278AHE3_A/D","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6278AHE3_A-D","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278AHE3_A-D","factsUrl":"https://icboms.com/api/mcp/products/1N6278AHE3_A%2FD","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb® TVS diode, 1N6278AHE3_A/D, 17.1V standoff, 27.7V clamping @ 54.2A peak pulse, 1.5kW peak pulse power, DO-201AA axial through-hole package, -55°C to 175°C junction.","salesMarkdown":"## What the 1.5KE clamping spec means for automotive protection The 1N6278AHE3_A/D clamps at 27.7 V maximum under a 54.2 A 10/1000 µs surge, which means it absorbs a 1.5 kW transient and folds the spike down to a level the downstream semiconductor can survive — the unidirectional 1-channel stack is the working element for a single rail. The 19 V minimum breakdown sets the guard band above the nominal rail; the 17.1 V standoff is the off-state working voltage the protected line sees during normal operation. At 175 °C maximum junction temperature, the thermal margin to Tj-max is the selection driver for engine-bay 24 V loads that see load-dump transients per ISO 7637-2. ## AEC-Q101 qualification and automotive deployment context The AEC-Q101 grade confirms the diode has passed the automotive qualification stress sequence — temperature cycling, humidity bias, and surge life — making it acceptable for under-hood and chassis-domain protection without a custom qualification program. This is not a commercial-temperature commercial-grade part; the -55 to 175 °C Tj range and the automotive TransZorb® series designation set the grade floor for ECU input protection, reverse-battery clamps, and inductive kick suppression in the drivetrain domain. The DO-201AA axial body mounts through-hole on a PCB — the lead bend radius at the package shoulder is the practical limit on mechanical stress during board flex.","metaTitle":"Vishay 1N6278AHE3_A/D TVS Diode, 27.7V Clamping, 1.5kW","metaDescription":"Vishay 1N6278AHE3_A/D unidirectional TVS diode, 17.1V standoff, 27.7V clamping, 54.2A peak pulse, AEC-Q101 automotive, DO-201AA through-hole.","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 & Box (TB)","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%2FD/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 1N6278AHE3_A/D and how is it quoted for volume purchases?","answer":"The part is manufactured by Vishay General Semiconductor — Diodes Division under the 1N6278 base number series. Tape & Box (TB) packaging is the standard pack format."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278AHE3_A-D","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-D 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}}