{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6277ARL4","brand":"onsemi","brandSlug":"onsemi","productSlug":"1N6277ARL4","canonicalUrl":"https://icboms.com/onsemi/1N6277ARL4","factsUrl":"https://icboms.com/api/mcp/products/1N6277ARL4","rawCanonicalId":null},"summary":{"shortDescription":"onsemi Mosorb™ series, Zener TVS diode, 1N6277ARL4, 1500W peak pulse power, 15.3V reverse standoff, 25.2V clamping, DO-201AD axial package, -65°C to 175°C junction temperature.","salesMarkdown":"## Transient protection for 15V rails The 1N6277ARL4 is a unidirectional Zener TVS diode from the onsemi Mosorb™ series, rated for 1500W peak pulse power at 10/1000 µs waveform. It clamps transients at 25.2V maximum when the surge current reaches Ipp, protecting downstream circuitry on a 15.3V nominal rail. The DO-201AD axial package supports through-hole mounting, suited for high-reliability power supplies, industrial controls, and telecom line cards where surge immunity is specified. Operating junction temperature spans -65°C to 175°C, covering military and automotive under-hood thermal extremes without derating concerns. ## Clamping voltage and breakdown margin Minimum breakdown voltage is 17.1V, providing a 1.8V guard band above the 15.3V standoff. The 25.2V clamp at peak pulse current ensures the protected bus sees no more than 25.2V during a surge event. No power line protection feature is integrated — this device is a standalone TVS, not a combination protector. ## Obsolete status and sourcing path onsemi has marked the 1N6277ARL4 as Obsolete. No official successor is listed in the available records. Buyers should confirm BOM fit and source remaining inventory through authorized channels or verified stock. For new designs, evaluate current onsemi TVS families with equivalent 1500W rating and DO-201AD footprint.","metaTitle":"1N6277ARL4 Zener TVS Diode – onsemi Mosorb™ 1500W DO-201AD","metaDescription":"onsemi 1N6277ARL4 Zener TVS, 1500W peak pulse, 15.3V standoff, 25.2V clamp. Obsolete – source via RFQ. DO-201AD axial, -65°C to 175°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"Mosorb™","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AD, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1N6277","Operating Temperature":"-65°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","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)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1ce676890a04bce4da4e0ab60f37b157.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for 1N6277ARL4?","answer":"No official replacement is listed in the available records. For a functional equivalent, look for a 1500W unidirectional TVS in DO-201AD with a 15.3V standoff and 25.2V clamp. onsemi's current Mosorb™ or other TVS families with those ratings are candidates — verify the breakdown voltage window and pulse derating curve against your application."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/1N6277ARL4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/1N6277ARL4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:13:33.718Z","lastPublished":"2026-07-17T20:13:33.718Z","indexable":true}}