{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE20AHE3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE20AHE3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE20AHE3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE20AHE3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® automotive TVS, 1.5KE20AHE3/51, Zener, 1500W peak pulse, 27.7V clamp, DO-201AA axial, AEC-Q101.","salesMarkdown":"## Clamping parameters and circuit protection envelope The 1.5KE20AHE3/51: The 10/1000 µs pulse condition is the industry-standard TVS test waveform; the 54.2 A figure tells you the diode can shunt that current without exceeding its thermal limit for that pulse duration. Through-hole mounting in a DO-201AA (DO-27) axial package. The 1.5KE package code matches the standard TransZorb outline; the axial leads require a hole diameter of about 1.1 mm on the PCB. No power line protection is built in — this is a standalone transient suppressor, not a filtered TVS array. Vishay has marked the 1.5KE20AHE3/51 as obsolete. No pin-compatible direct replacement is documented; a parametric search for a 1.5 kW, 17.1 V standoff, unidirectional TVS in DO-201AA will yield functional alternatives, but each requires BOM-level verification of the clamping voltage and pulse current profile.","metaTitle":"Vishay 1.5KE20AHE3/51 TVS Diode, 1.5kW, 27.7V Clamp","metaDescription":"Obsolete Vishay TransZorb 1.5KE20AHE3/51 automotive TVS. 1500W peak pulse, 27.7V clamp, AEC-Q101. Sourced to order against RFQ through independent distribution.","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®","Package":"Bulk","Applications":"-","Mounting Type":"Through Hole","Qualification":"AEC-Q101","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE20","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"19V","Voltage - Clamping (Max) @ Ipp":"27.7V","Voltage - Reverse Standoff (Typ)":"17.1V","Current - Peak Pulse (10/1000µs)":"54.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5346","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1d9056c1671be5ed4e8275742e36e8d5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What automotive qualification does the 1.5KE20AHE3/51 carry?","answer":"It is AEC-Q101 qualified, meaning it passed the automotive-grade semiconductor stress tests for use in vehicle electronics. The junction temperature range is -55°C to 175°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE20AHE3-51","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/1.5KE20AHE3-51 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}}