{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE12A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE12A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE12A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE12A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor TransZorb® series, TVS Zener, unidirectional, 1500W peak pulse, 10.2V reverse standoff, 16.7V clamping, DO-201AA axial, bulk.","salesMarkdown":"## Last-buy TVS for 12V rail clamping The 1.5KE12A-E3/51: Packaged in the DO-201AA (DO-27) axial leaded form, it suits through-hole board layouts where a single device guards a power entry or DC bus against surges per IEC 61000-4-5. ## Sourcing posture for a Last-Buy part Vishay has marked the 1.5KE12A-/51 as Last Buy. This means the manufacturer is no longer accepting new orders beyond a defined window — the part is on a path to end-of-life. For new designs, a pin-compatible alternative from the same TransZorb family should be evaluated. Available through independent distribution channels on a quoted-to-order basis. A 12V rail with a 16.7V clamp leaves margin for a downstream regulator's abs-max input rating — typical 12V-to-5V LDOs tolerate 20V for short pulses. The 10.2V reverse standoff voltage means the diode does not conduct at the normal 12V rail voltage, drawing only leakage current until a transient exceeds the breakdown threshold of 11.4V minimum.","metaTitle":"1.5KE12A-E3/51 Vishay TVS, 1500W, 10.2V Standoff, DO-201AA","metaDescription":"Vishay 1.5KE12A-E3/51 TransZorb TVS diode, 1500W peak pulse, 10.2V reverse standoff, unidirectional, DO-201AA axial.","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":"1.5KE12","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"11.4V","Voltage - Clamping (Max) @ Ipp":"16.7V","Voltage - Reverse Standoff (Typ)":"10.2V","Current - Peak Pulse (10/1000µs)":"89.8A"}},"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 is the closest pin-compatible alternative to the 1.5KE12A-/51?","answer":"Within the same TransZorb family, a functionally equivalent unidirectional TVS with the same 1500W rating, 10.2V standoff, and DO-201AA package is the 1.5KE12A (base product number). Verify the exact suffix for your procurement code — the -/51 variant indicates a specific packaging and lead-finish option."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE12A-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/1.5KE12A-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}}