{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6278AHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6278AHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278AHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1N6278AHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor Zener/TVS diode, 1N6278AHE3/51, TransZorb series, Automotive grade, AEC-Q101, 1500W peak pulse, 17.1V reverse standoff, 27.7V clamping @ 54.2A, DO-201AA axial through-hole.","salesMarkdown":"## TransZorb TVS in DO-201AA — what 1500W peak pulse protects The 1N6278AHE3/51 is a unidirectional TransZorb® transient voltage suppressor, not a plain Zener — Vishay's TransZorb brand indicates a voltage-clamping device designed to absorb and shunt transient surge energy away from protected circuitry. The 1500 W peak pulse rating (10/1000 µs waveform) defines its surge energy handling — it survives a single 54.2 A peak pulse event and recovers, clamping the line at 27.7 V maximum while the reverse standoff sits at 17.1 V typical. The DO-201AA axial through-hole package mounts directly to a PCB or chassis lead, common in legacy automotive and industrial power distribution where a through-hole part was the standard chassis-mount footprint before SMT took over. ## Automotive grade — what AEC-Q101 qualification means This is the thermal envelope a powertrain control module or chassis-level protection circuit expects; a commercial-grade TVS in the same package would not carry that temperature rating. ## Obsolete — sourcing reality and what replaces it The 1N6278AHE3/51 carries an Obsolete product status — no longer on Vishay's active manufacturing schedule. Independent distribution channels handle remaining stock and last-time-buy inventory; quantities are lot-specific and pricing is confirmed at RFQ.","metaTitle":"Vishay 1N6278AHE3/51 TVS Diode, 1500W, 27.7V Clamping","metaDescription":"Vishay 1N6278AHE3/51 obsolete — TransZorb TVS, AEC-Q101, 1500W peak pulse, 17.1V standoff, 27.7V clamping. 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","Grade":"Automotive","Series":"TransZorb®","Packaging":"Bulk","Part Status":"Obsolete","Applications":"-","Mounting Type":"Through Hole","Qualification":"AEC-Q101","Package / Case":"DO-201AA, DO-27, Axial","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/b6470e7c23af28f3f376ae45aee8e9ef.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6278AHE3%2F51/alternatives.json"},"ai":{"faq":[{"question":"Where can I source 1N6278AHE3/51?","answer":"Independent distribution channels carry remaining inventory and last-time-buy stock; the part is quoted to order against an RFQ with availability and pricing confirmed at quote time."},{"question":"What does TransZorb® mean versus a standard Zener?","answer":"TransZorb is Vishay's trademarked TVS (transient voltage suppressor) design — it clamps voltage like a Zener but is built to absorb a defined peak pulse energy and recover, whereas a standard Zener is rated for continuous DC regulation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278AHE3-51","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/1N6278AHE3-51 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:45:01.667Z","lastPublished":"2026-07-22T16:45:01.667Z","indexable":true}}