{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6278A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6278A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1N6278A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, TransZorb® TVS diode, 1N6278A-/51, unidirectional, 17.1V standoff, 27.7V clamping @ 54.2A, 1500W peak pulse, -55°C~175°C TJ, DO-201AA through-hole.","salesMarkdown":"## What the clamping specs mean on the bench The 1N6278A-E3/51: Rated 1500 W peak pulse (10/1000 µs) with a 17.1 V reverse standoff — that is the working rail the TVS watches without turning on. On a 24 V supply line that is the margin you are protecting: the TVS clamps the transient well below what the downstream semiconductors can take. The 175°C maximum junction temperature gives the part headroom in high-ambient or enclosed-panel environments — important if you are tracing a rail that failed because the original TVS was undersized for the surge environment. The scorch mark on a failed TVS of this class usually tells you whether it saw a single large event or repeated smaller hits that cooked the junction. ## DO-201AA through-hole — what this package means for rework Axial-leaded DO-201AA, through-hole mount — the two leads are spaced wide enough that you can get a hot-air pencil or solder iron under the body without reflowing adjacent parts on the same rail. Bake before rework if the board has been in a humid environment; the glass-passivated junction in a TransZorb is moisture-sensitive at the reflow stage, not at the rework stage, but the board laminate matters. Tin-plated leads accept standard solder (Sn63/Pb37 or SAC305) without special profile care.","metaTitle":"Vishay 1N6278A-E3/51 TVS Diode, 1.5kW, 27.7V Clamp","metaDescription":"Vishay 1N6278A-E3/51 unidirectional TVS diode, 1500W peak pulse, 17.1V standoff, 27.7V clamping, DO-201AA through-hole.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"TransZorb®","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Last Time Buy","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":"$0.7268","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6278A-E3%2F51/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278A-E3-51","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/1N6278A-E3-51 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:45:34.405Z","lastPublished":"2026-07-22T16:45:34.405Z","indexable":true}}