{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE20A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE20A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE20A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE20A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® Zener TVS diode, 1.5KE20A-/51, 1500W peak pulse power, 17.1V reverse standoff, 27.7V clamp, DO-201AA/DO-27 axial, unidirectional.","salesMarkdown":"## Transient protection parameters for the 1.5KE20A-E3/51 At the 17.1 V reverse standoff voltage (the DC rail it protects), leakage current is negligible; when a transient exceeds the 19 V minimum breakdown threshold, the device clamps the surge to 27.7 V maximum while conducting 54.2 A of peak pulse current. This clamping voltage is the maximum the downstream circuitry sees — if the protected rail's absolute-max rating sits below 27.7 V, this part does not provide enough margin. ## Last Buy lifecycle — procurement timeline Vishay lists the 1.5KE20A-/51 as Last Buy. This means the manufacturer has announced end-of-life and is accepting final orders within a defined last-time-buy window. Once that window closes, the part will no longer be produced. For existing BOM lines, the procurement decision is time-sensitive: order the lifetime buy quantity now, or plan a qualification of a replacement part before the LTB expires. The DO-201AA/DO-27 axial package (through-hole) suits leaded board layouts where the TVS is hand-soldered or wave-soldered into a plated through-hole — the axial leads handle the thermal stress of the soldering process without cracking the die attach. ## Sourcing this part through independent distribution RoHS compliance documentation is available from Vishay upon request.","metaTitle":"Vishay 1.5KE20A-E3/51 TransZorb TVS, 1500W, 17.1V Standoff","metaDescription":"Vishay 1.5KE20A-E3/51 TransZorb Zener TVS diode, 1500W peak pulse, 17.1V reverse standoff, 27.7V clamp. 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":"1.5KE20","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":"$0.7268","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE20A-/51 come in?","answer":"It is supplied in the DO-201AA / DO-27 axial leaded package, through-hole mount, suitable for wave or hand soldering into a plated through-hole board."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE20A-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/1.5KE20A-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}}