{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91AHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE91AHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91AHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91AHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, Automotive Grade, 1.5KE91AHE3/51, 1500W Peak Pulse, 77.8V Standoff, DO-201AA Axial, Bulk.","salesMarkdown":"## Peak pulse power and protection window The 1.5KE91AHE3/51 is a 1500W (1.5kW) peak pulse power TransZorb® TVS diode from Vishay, rated for a 10/1000µs waveform. Its 77.8V reverse standoff voltage means it stays out of the way during normal operation, clamping transients at 125V max when the 12A peak pulse current hits. The single unidirectional channel (one diode) is straightforward to place on a PCB — just orient the cathode band toward the protected rail. The DO-201AA axial leaded package is through-hole, easy to hand-solder or wave-solder, and the bulk packaging suits low-volume production or prototyping. ## Obsolete status and sourcing path Vishay has marked the 1.5KE91AHE3/51 as obsolete.","metaTitle":"Vishay 1.5KE91AHE3/51 TransZorb TVS, 1500W, 77.8V Standoff","metaDescription":"Obsolete Vishay 1.5KE91AHE3/51 TransZorb automotive TVS diode, 1500W peak pulse, 77.8V standoff, AEC-Q101. Sourced to order against 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","Grade":"Automotive","Series":"TransZorb®","Packaging":"Bulk","Part Status":"Obsolete","Applications":"-","Mounting Type":"Through Hole","Qualification":"AEC-Q101","Package / Case":"DO-201AA, DO-27, Axial","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":"$0.5346","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b6470e7c23af28f3f376ae45aee8e9ef.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE91AHE3%2F51/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5KE91AHE3/51?","answer":"A functionally similar TVS with the same 77.8V standoff and 1500W rating in a DO-201AA package would need to be evaluated for breakdown voltage and clamping specs against the BOM requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE91AHE3-51","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/1.5KE91AHE3-51 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}}