{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® TVS Diode, Zener Type, 1.5KE91A-/51, 1500W Peak Pulse, 77.8V Standoff, 125V Clamp, DO-201AA Axial, Bulk.","salesMarkdown":"## Last-time-buy status and what it means for your BOM The 1.5KE91A-E3/51: Vishay has placed the 1.5KE91A-/51 on Last Buy status — the manufacturer is no longer accepting unlimited orders, and the remaining production window is finite. ## What the 1.5 kW rating means in a real circuit At the 12 A peak pulse current the device clamps at 125 V maximum, so a 77.8 V nominal rail sees the overvoltage limited to 125 V before the TVS absorbs the energy. Through-hole mounting in a DO-201AA (DO-27) axial-lead package — the 1.5KE series footprint is a standard two-hole pattern on 0.300-inch centres, compatible with wave-solder assembly.","metaTitle":"Vishay 1.5KE91A-E3/51 TransZorb TVS, 1.5kW, 77.8V","metaDescription":"Vishay 1.5KE91A-E3/51 TransZorb TVS diode, 1500W peak pulse, 77.8V standoff, DO-201AA. Last Buy status — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"TransZorb®","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Last Time Buy","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE91","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"86.5V","Voltage - Clamping (Max) @ Ipp":"125V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7268","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE91A-E3%2F51/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5KE91A-/51?","answer":"A functional replacement requires a TVS with 77.8 V standoff, 1.5 kW peak pulse, and DO-201AA axial package — parametric equivalents from other manufacturers exist but are not cross-referenced here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91A-E3-51","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/1.5KE91A-E3-51 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}