{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6278A-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6278A-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6278A-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1N6278A-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor Zener TVS, TransZorb series, 1N6278A-/73, 17.1V reverse standoff, 27.7V clamping, 1500W peak pulse (10/1000µs), 54.2A peak pulse current, DO-201AA axial through-hole, Tape & Box.","salesMarkdown":"## What the 1N6278A-E3/73 does on a board A unidirectional Zener TVS in the TransZorb series — designed to clamp voltage transients on a protected rail before they reach downstream circuitry. 17.1V reverse standoff is the working voltage the rail sees during normal operation; when a transient drives the line above that, the device avalanches at its 19V minimum breakdown and clamps the peak to 27.7V while conducting 54.2A peak pulse current — the number that sizes the upstream protection upstream of this diode. ## Peak pulse rating and thermal margin 1500W peak pulse at 10/1000µs waveform — this is the industry-standard TVS rating that allows direct comparison across manufacturers and series, so the 1N6278A-/73 cross-references cleanly against any other 1.5 kW unidirectional TVS in a similar voltage band. 175°C maximum junction temperature gives the part significant thermal margin in ambient-exposed or enclosed-panel layouts — the derating headroom above 85°C ambient is what keeps the clamping characteristic stable through a fault event. The DO-201AA axial package (also called DO-27) is the standard through-hole footprint for 1.5 kW TVS diodes across multiple suppliers — the body length and lead spacing are held to a common form factor, so a board routed for this footprint can accept any manufacturer who follows the same package outline. Through-hole mounting means it sits on the line side of a power supply board — the leads carry the fault current directly into the plane or heatsink pad during a clamping event, which is why lead dress and solder integrity matter more for a TVS than for a signal diode. ## Sourcing posture The base product number 1N6278 anchors the family, so any 1.5 kW unidirectional TVS with matching standoff and clamping values is a candidate cross-reference — confirm the BOM position and the exact voltage band before committing.","metaTitle":"Vishay 1N6278A-E3/73 Zener TVS, 1500W Peak Pulse","metaDescription":"Vishay TransZorb Zener TVS, 17.1V standoff / 27.7V clamping / 1500W peak pulse, DO-201AA axial. Active — quoted to order against BOM quantity.","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":"TransZorb®","Package":"Tape & Box (TB)","Applications":"General Purpose","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":"$0.3851","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6278A-E3%2F73/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-E3-73","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-E3-73 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}}