{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6277-E3/73","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1N6277-E3-73","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6277-E3-73","factsUrl":"https://icboms.com/api/mcp/products/1N6277-E3%2F73","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® Zener TVS, 1N6277-/73, 1500W peak pulse, 14.5V standoff / 16.2V breakdown / 26.5V clamping, 56.6A peak pulse, DO-201AA axial, tape & box.","salesMarkdown":"## Obsolete — independent-channel sourcing The 1N6277-E3/73: This series (1.5KE) is a known Vishay family, so compatible alternatives in the same DO-201AA footprint may exist within the same series family, but there is no manufacturer-stated pin-compatible replacement in the ledger — a BOM engineer should confirm fit before substituting. ## What the clamping specs mean for your circuit The 14.5 V typical reverse standoff is the working voltage the line should sit below in normal operation, below which the TVS stays off and draws only leakage current. Breakdown at 16.2 V minimum means the Zener conduction threshold sits well below the clamping ceiling — the device turns on aggressively relative to the standoff, which is the right behavior for a clamping suppressor: you want the clamp to fire low and hard, not let the overvoltage plateau persist. Higher-energy transients (8/20 µs lightning pulses, for instance) reduce the achievable peak current at the same energy; check the V-I characteristic curve for those conditions. ## DO-201AA package and series positioning The DO-201AA axial package is the standard 1.5KE device footprint — wide-body glass passivated construction, intended for through-hole insertion on a PCB or chassis. The supplier device package field lists 1.5KE, which is the series designation Vishay uses for this power class of unidirectional TVS Zener. The -55°C to 175°C junction temperature rating covers the full military-industrial temperature band — the upper limit is junction-limited, so thermal resistance from the lead to the junction determines the actual continuous dissipation the part can handle at a given ambient. For a through-hole device in free air, the leads carry most of the heatsinking. ## TransZorb family and unidirectional protection The TransZorb® designation marks this as Vishay's original glass-passivated Zener TVS series — the glass passivation gives better stability under voltage stress than unmasked junction chips. It is a unidirectional device (one direction of protection), so it clamps only positive transients on the protected line; for bidirectional AC lines a dual-polarity TVS is required, and this part would not serve that role. General-purpose application designation means no specific industry-standard qualification (AEC-Q101 for automotive, MIL-PRF-19500 for defense) is cited — the part was targeted at commercial and industrial power-supply and electronics protection applications, not safety-critical or automotive domains without additional qualification on the buyer's part.","metaTitle":"1N6277-E3/73 Zener TVS, Obsolete, 1500W Peak Pulse","metaDescription":"Vishay 1N6277-E3/73 TransZorb TVS diode — obsolete, 1500W peak pulse, 14.5V standoff / 26.5V clamping, DO-201AA axial. Sourced to order via RFQ.","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 & Box (TB)","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%2F73/alternatives.json"},"ai":{"faq":[{"question":"Where can I source the 1N6277-/73?","answer":"No authorized-channel inventory is implied. Lead time and current pricing confirmed when you request a quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1N6277-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/1N6277-E3-73 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T16:43:44.457Z","lastPublished":"2026-07-22T16:43:44.457Z","indexable":true}}