{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6279-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6279-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6279-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1N6279-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, TransZorb® series, Zener TVS diode, 1N6279-/54, 1500W peak pulse, 17.8V standoff, 31.9V clamping @ 47A, DO-201AA axial, through-hole.","salesMarkdown":"The 1N6279-E3/54: The 1N6279-/54 is a unidirectional TransZorb® TVS diode — Vishay's trade name for a Zener-based transient voltage suppressor in an axial DO-201AA package. The 1500 W peak pulse rating (10/1000 µs waveform) tells you it survives a single-event surge of that magnitude without clamping into thermal runaway, but it is a clamping device, not a filtering element — it dumps the surge energy to ground once the voltage exceeds the breakdown threshold. With a typical reverse standoff voltage of 17.8 V and a minimum breakdown of 19.8 V, the part sits above a 15–16 V rail with enough margin to stay off during normal operation but fires before the downstream load sees a damaging overvoltage. The maximum clamping voltage at 47 A peak pulse current is 31.9 V — that 14 V headroom between standoff and clamping is where the TVS does its work. ## Temperature grade and what it opens up The junction temperature, not ambient, is what the derating curve references: keep the steady-state dissipation below the derated value at your worst-case ambient and the 175 °C Tj ceiling has margin. ## What obsolete means for the sourcing buyer Independent stock exists in lot-specific quantities; availability and lot traceability are confirmed at RFQ. For a shortage-cycle buyer watching allocation windows, a TVS in an axial package that is off franchised stocking lists means the spot premium is set by what the broker houses have on hand, not by a 24-hour ship-from-disti clock.","metaTitle":"Vishay 1N6279-E3/54 TVS Diode, 1500W, DO-201AA","metaDescription":"Vishay 1N6279-E3/54 TransZorb® TVS diode, 1500W peak pulse, 31.9V clamping. Obsolete — quoted to order through independent channels.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"TransZorb®","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1N6279","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"19.8V","Voltage - Clamping (Max) @ Ipp":"31.9V","Voltage - Reverse Standoff (Typ)":"17.8V","Current - Peak Pulse (10/1000µs)":"47A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6279-E3%2F54/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to 1N6279-/54 in the Vishay TVS range?","answer":"The 1.5KE series package and clamping voltage class is a common TVS form factor — the family footprint is consistent — but any substitute must be evaluated against the standoff, breakdown, and clamping specs on the actual application schematic, not assumed from a family match."},{"question":"Does Vishay provide RoHS or REACH documentation for 1N6279-/54?","answer":"The available record does not carry a RoHS, REACH, or UL compliance confirmation for this order code. Confirm compliance status directly with the supplier at RFQ — the part predates some of the more recent substance-restriction frameworks, and lot-level testing statements may be required for industrial or medical builds that enforce IEC 62321 or REACH Article 33."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6279-E3-54","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/1N6279-E3-54 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:49:35.854Z","lastPublished":"2026-07-22T16:49:35.854Z","indexable":true}}