{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE51A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE51A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE51A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® series, Zener TVS diode, 1.5KE51A-/51, 1500W peak pulse, 70.1V clamping, DO-201AA axial, bulk.","salesMarkdown":"## 1500 W peak pulse — the clamping ceiling for 43.6 V rails The 1.5KE51A-E3/51: The 70.1 V clamp means downstream components on a 48 V bus see no more than that during a surge — critical for MOSFET Vds or DC-DC converter abs-max ratings. The 1500 W rating assumes a 10/1000 µs pulse; shorter transients allow higher peak current, longer ones require derating. ## Last Buy — sourcing reality for the BOM line Vishay has placed the 1.5KE51A-/51 in Last Buy status. This is not a current-production part for new designs; it is supported for existing BOM lines through the end-of-life inventory window. For a procurement buyer managing a last-time-buy, the key decision is quantity commitment: the 1500 W peak pulse rating and 43.6 V standoff are fixed, so the replacement path (if needed) must match both the clamping voltage and the DO-201AA axial footprint. No pin-compatible alternative is listed in the family data. ## Through-hole DO-201AA — board fit and thermal path The DO-201AA (DO-27) axial leaded package mounts through hole, with the cathode band indicating the unidirectional orientation. The 1.5KE series common footprint means the same PCB pad layout serves the full voltage range — a board designed for any 1.5KE part accepts this 51 V variant without layout changes. The bulk packaging (/51 suffix) ships in standard ammo-pack quantities; no tape-and-reel option is listed for this code.","metaTitle":"1.5KE51A-E3/51 Vishay TransZorb TVS, 1500W, 70.1V Clamp","metaDescription":"Vishay 1.5KE51A-E3/51 TransZorb Zener TVS diode, 1500W peak pulse, 70.1V clamp, DO-201AA. Last Buy lifecycle. 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":"1.5KE51","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"48.5V","Voltage - Clamping (Max) @ Ipp":"70.1V","Voltage - Reverse Standoff (Typ)":"43.6V","Current - Peak Pulse (10/1000µs)":"21.4A"}},"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 1.5KE51A-/51?","answer":"Submit a quote request for the exact quantity and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE51A-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/1.5KE51A-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}}