{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6277HE3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6277HE3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6277HE3-54","factsUrl":"https://icboms.com/api/mcp/products/1N6277HE3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive AEC-Q101 TransZorb® Zener TVS diode, 1N6277HE3/54, 14.5V reverse standoff, 16.2V breakdown min, 26.5V clamping max, 56.6A peak pulse, 1500W, DO-201AA axial through-hole, -55°C to 175°C junction.","salesMarkdown":"## What the 1N6277HE3/54 is — and why the OBSOLETE tag dominates the sourcing decision The 1N6277HE3/54 is a unidirectional Zener-based transient voltage suppressor — Vishay calls this the TransZorb® series, their trademark for the TVS diode architecture that clamps fast transients by avalanche breakdown. AEC-Q101 qualification puts it in the automotive screening flow, which means it passed temperature cycling, humidity, and electrical stress screens that a commercial-grade TVS did not. ## Clamp voltage and peak pulse capability — what the ratings mean in-circuit The reverse standoff voltage is 14.5V typ — the rail this diode watches sits below this level without conduction. That 26.5V clamping ceiling is the design limit for whatever circuitry sits behind the TVS — downstream semiconductors must survive a 26.5V spike without damage. The 1500W peak pulse rating (10/1000µs wave shape) tells you the energy this part can absorb in a automotive load-dump or inductive kick event without degrading. A designer working in a 12V automotive system uses these three numbers to confirm the protected rail sits between 12V and 14.5V in normal operation, and that the transient energy budget stays under the 1500W/10ms rating. The 175°C upper limit is set at the junction, not the ambient; the board designer needs to confirm the RthJA of the DO-201AA lead frame in the actual mounting orientation keeps the junction below that limit under worst-case load. ## Package and automotive deployment context The DO-201AA (DO-27) axial leaded package mounts through-hole — the leads insert into a PCB and get wave-soldered or hand-soldered depending on the production context. The Tape & Reel packaging indicates this was released as an automotive reeled part for automated insertion or hand-pack assembly. Automotive deployment means the board it protects will see temperature extremes, vibration, and potentially moisture — the AEC-Q101 screening covers those conditions, but the downstream system-level qualification is the OEM's responsibility, not the diode's alone.","metaTitle":"Vishay 1N6277HE3/54 Zener TVS Diode, 14.5V Standoff","metaDescription":"Vishay 1N6277HE3/54, AEC-Q101 automotive TransZorb TVS diode, 1500W peak pulse, DO-201AA axial. Obsolete — quoted to order through independent distribution.","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":"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/1N6277HE3%2F54/alternatives.json"},"ai":{"faq":[{"question":"What is the closest alternative to 1N6277HE3/54 in the Vishay TransZorb series?","answer":"Quote through the RFQ channel to confirm fit before committing a BOM position."},{"question":"What automotive qualifications does 1N6277HE3/54 carry?","answer":"This is the minimum qualification level for automotive under-hood and chassis-domain deployments. Confirm the specific AEC-Q101 revision date with Vishay if the OEM program has a dated qualification requirement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6277HE3-54","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/1N6277HE3-54 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:43:27.961Z","lastPublished":"2026-07-22T16:43:27.961Z","indexable":true}}