{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE15A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE15A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE15A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE15A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® series, Zener TVS diode, unidirectional, 1500W peak pulse, 12.8V reverse standoff, DO-201AA axial through-hole, bulk package.","salesMarkdown":"## What the 1500 W peak pulse rating means for your rail The 1.5KE15A-E3/51: That 1500 W figure defines the energy it can clamp without failing — at the rated 70.8 A peak pulse current, the clamping voltage holds at 21.2 V max. The reverse standoff voltage is 12.8 V, meaning the diode stays off below that line voltage and only starts conducting when a transient pushes past the 14.3 V minimum breakdown threshold. For a 12 V rail, this gives enough margin to avoid nuisance clamping from normal ripple while catching surges before they reach the load. ## Lifecycle reality — Last Buy, not an active line item Vishay lists this part as Last Buy. That means the manufacturer has announced end-of-life and the final production window is closing — new orders are accepted only for the remaining build allocation. For a BOM that already carries this part, the Last Buy status means procurement should lock in the lifetime buy quantity now. For new designs, a functionally equivalent 1500 W unidirectional TVS in a DO-201 package with the same 12.8 V standoff and 21.2 V clamp can be sourced — but the pinout and footprint are standard axial, so any DO-201 TVS with matching parametrics fits without a board spin. ## Temperature range and package — board-fit constraints The DO-201AA (DO-27) axial package is through-hole — the leads are 0.96 mm diameter typical, fitting a 1.0 mm plated-through hole on a standard 2.54 mm pitch. The bulk packaging means no reel or tape; parts ship loose in tubes or bags.","metaTitle":"1.5KE15A-E3/51 Vishay TransZorb TVS, 1500W, 12.8V Standoff","metaDescription":"Vishay 1.5KE15A-E3/51 unidirectional Zener TVS, 1500W peak pulse, 12.8V reverse standoff, DO-201AA axial. 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":"1.5KE15","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"14.3V","Voltage - Clamping (Max) @ Ipp":"21.2V","Voltage - Reverse Standoff (Typ)":"12.8V","Current - Peak Pulse (10/1000µs)":"70.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1.5KE15A-/51 and what is the lead time?","answer":"This part is in Last Buy status from Vishay. Submit an RFQ for a firm lead time and lot traceability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE15A-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/1.5KE15A-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}}