{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6277AHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6277AHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6277AHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1N6277AHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor Zener/TVS, TransZorb® series, AEC-Q101, 1.5kW peak pulse, 15.3V standoff, 25.2V clamping @ 59.5A, DO-201AA axial, through-hole, -55°C~175°C junction.","salesMarkdown":"## What the clamp rating means for automotive survival The 1N6277AHE3/51: The standoff voltage of 15.3 V defines the continuous working peak reverse voltage the diode presents to the line; any transient above that level gets clamped. ## AEC-Q101 automotive grade and thermal margin The -55°C to 175°C junction temperature range reflects that headroom: a diode sitting near the engine bay bulkhead sees junction temps that swing with ambient and load. The 175°C rating gives margin against the thermal runaway risk inherent to Zener conduction — above the rated Tj the reverse leakage current rises sharply, which adds heat, which adds leakage, a feedback loop that terminates the part. Keeping the design junction below the 175°C ceiling under worst-case ambient is the layout and heatsinking call. ## Sourcing an obsolete automotive TVS Vishay marked the 1N6277AHE3/51 obsolete — no official last-time-buy window date or successor order code appears in the record, and no cross-reference is on file from the manufacturer. The DO-201AA TVS slot in the same series is a common footprint, but a pin-compatible substitute with matching standoff, clamping, and AEC-Q101 grade is not guaranteed just by searching the series — check the actual electrical parameters against the board's transient exposure budget. Independent distribution channels carry surplus and excess stock; quantities are lot-date-code specific and availability is confirmed at RFQ. Sourcing against a BOM line for a new design with this part means either qualifying a substitute now or carrying the last-time-buy risk for an aging production run.","metaTitle":"1N6277AHE3/51 TVS Diode 1.5kW 15.3V Automotive AEC-Q101","metaDescription":"Obsolete Vishay 1N6277AHE3/51 TransZorb® TVS diode, 1.5kW peak pulse, 15.3V standoff, 25.2V clamping, AEC-Q101, DO-201AA axial.","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":"Bulk","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)":"17.1V","Voltage - Clamping (Max) @ Ipp":"25.2V","Voltage - Reverse Standoff (Typ)":"15.3V","Current - Peak Pulse (10/1000µs)":"59.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5346","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/55e3e40e24fd2c3f96443c3e231bf459.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6277AHE3%2F51/alternatives.json"},"ai":{"faq":[{"question":"Where can I source the 1N6277AHE3/51 and what will it cost?","answer":"No live stock count or price is published on this listing."},{"question":"What series is the 1N6277AHE3/51, and is it automotive-qualified?","answer":"It carries the TransZorb® series designation and is AEC-Q101 qualified — the automotive stress-grade version of this TVS diode family. The breakdown voltage minimum is 17.1 V, standoff typ 15.3 V, clamping max 25.2 V at 59.5 A peak pulse."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6277AHE3-51","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/1N6277AHE3-51 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:42:15.635Z","lastPublished":"2026-07-22T16:42:15.635Z","indexable":true}}