{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6277-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6277-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6277-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1N6277-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division 1N6277-/54, Zener, TransZorb series, 1.5 kW peak pulse, unidirectional, 14.5 V reverse standoff, DO-201AA axial through-hole package.","salesMarkdown":"The 1N6277-E3/54: The 1.5 kW peak pulse rating specifies what the device survives during a single 10/1000 µs transient event — the shape of that waveform is the key qualifier. A 1 kW lightning-surge candidate that sees a 10/1000 µs strike dissipates 15 J in that window, and the clamping voltage at the peak current of 56.6 A sits at 26.5 V. That 26.5 V clamping ceiling is what your downstream circuitry must be rated to withstand. 16.2 V minimum breakdown at the low end and the 14.5 V typical reverse standoff define the protection window — the part is off until the transient pushes the line above 14.5 V, then it snaps into conduction and clamps at 26.5 V. For a 15 V rail, the 14.5 V standoff gives only 0.5 V margin in normal operation, so this part is not protecting against a regulated 15 V supply — it is there for bus lines that sit near ground in idle and see inductive or lightning transients above that standoff level. ## Obsolete — sourcing reality for a TransZorb The 1.5KE series covers the same DO-201AA footprint across a range of standoff voltages — the 1.5KE16A at 16 V standoff is the nearest candidate by voltage, but the exact standoff and clamping specs need cross-checking against your board's transient requirement before committing to a substitute.","metaTitle":"Vishay 1N6277-E3/54 Zener, 1.5 kW Peak Pulse, DO-201AA","metaDescription":"Vishay 1N6277-E3/54 unidirectional TransZorb Zener, 14.5 V standoff, 26.5 V clamping, 1.5 kW peak.","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":"1N6277","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"16.2V","Voltage - Clamping (Max) @ Ipp":"26.5V","Voltage - Reverse Standoff (Typ)":"14.5V","Current - Peak Pulse (10/1000µs)":"56.6A"}},"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/1N6277-E3%2F54/alternatives.json"},"ai":{"faq":[{"question":"What Zener series does the 1N6277-/54 belong to?","answer":"The 1N6277-/54 is a unidirectional TransZorb Zener — Vishay's trade name for their Zener-based transient voltage suppressor series. The TransZorb construction uses a Zener junction to clamp transients the same way a TVS diode does."},{"question":"What voltage does the 1N6277-/54 clamp at?","answer":"The minimum breakdown is 16.2 V, with a typical reverse standoff of 14.5 V — the protection window sits between 14.5 V and 26.5 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6277-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/1N6277-E3-54 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:43:29.110Z","lastPublished":"2026-07-22T16:43:29.110Z","indexable":true}}