{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6279HE3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6279HE3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6279HE3-54","factsUrl":"https://icboms.com/api/mcp/products/1N6279HE3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay, 1.5KE series, unidirectional Zener TVS, 1N6279HE3/54, 1500 W peak pulse, 17.8 V standoff, 31.9 V clamping, 47 A peak pulse, DO-201AA axial, AEC-Q101.","salesMarkdown":"## What the 1N6279HE3/54 is and why it matters for automotive protection The 1N6279HE3/54 is a unidirectional Zener-based TVS (Transient Voltage Suppressor), classified in the 1.5KE series and qualified to AEC-Q101 for automotive environments. The reverse standoff voltage of 17.8 V typ means the TVS sits dormant across the protected node in normal operation, biasing below breakdown until a surge event drives it into avalanche. Junction temperature range is −55 to 175 °C — the upper limit accommodates under-hood thermal profiles where heat soak can push the die well past the 125 °C typical for commercial TVS devices. DO-201AA (axial, through-hole) package — the through-hole lead form handles higher surge current without bond-wire lift-off compared to SMD equivalents, and the mounting hole lands directly into a PCB without a socket or spring clip. ## Automotive qualification and what the AEC-Q101 grade signals AEC-Q101 is the automotive stress-grade qualification for discrete semiconductors — it certifies the part survived temperature cycling, humidity bias,ESD human-body-model discharge, and mechanical shock in quantities sufficient to validate a production process, not just a design prototype. ## Lifecycle status — obsolete and what that means for your BOM The 1N6279HE3/54 is marked Obsolete in Vishay's lifecycle records — no official production continues and no LTB (last-time-buy) window is recorded in this listing. No successor order code or pin-compatible alternative from Vishay General Semiconductor is listed in the available cross-reference data — the base product number 1N6279 anchors the family, but the exact die and voltage set for this date-code variant are not cross-referenced to a current order code. For a medical or defense sustainment program carrying this part on a BOM, the obsolescence flags a long-term sourcing risk — independent surplus channels may hold reel or ammo-pack quantities, but lot traceability and counterparty detection become the procurement concern, not price.","metaTitle":"Vishay 1N6279HE3/54 Zener TVS Diode, 1.5 kW, 31.9 V Clamp","metaDescription":"Obsolete Vishay 1N6279HE3/54 unidirectional TVS Zener, 1.5 kW peak pulse, 31.9 V clamp, AEC-Q101, DO-201AA. Sourced to order via RFQ.","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":"Automotive, AEC-Q101, TransZorb®","Package":"Tape & Reel (TR)","Applications":"Automotive","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/1N6279HE3%2F54/alternatives.json"},"ai":{"faq":[{"question":"Is the Vishay 1N6279HE3/54 still available or has it been discontinued?","answer":"The 1N6279HE3/54 is listed as Obsolete — Vishay General Semiconductor has discontinued production, and no active successor order code appears in the available cross-reference data. Sourcing is through independent channels against an RFQ, with availability and lot traceability confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6279HE3-54","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/1N6279HE3-54 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:49:44.201Z","lastPublished":"2026-07-22T16:49:44.201Z","indexable":true}}