{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE120A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE120A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE120A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE120A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, Type Zener, 1500W (1.5kW) Peak Pulse, 102V Reverse Standoff, 165V Clamp, DO-201AA Axial, Bulk.","salesMarkdown":"## Last Buy — what it means for your BOM The 1.5KE120A-E3/51: Vishay has flagged the 1.5KE120A-/51 as Last Buy — the manufacturer is winding down production, so this is the window to secure lifetime buys or finalize a replacement plan. No official successor is listed, so the BOM line needs a cross-reference or a board spin before the channel dries up. ## What the 1500W rating actually buys you The 1.5KE120A-/51 is a 1500W peak pulse power (1.5kW) TransZorb TVS diode — that is the energy it can absorb in a 10/1000µs surge without failing. For a 120V-rated rail, it clamps at 165V max, so the downstream silicon sees a 165V ceiling instead of the full transient. The 102V standoff means it sits across a 100V or 120V DC bus without conducting in normal operation. The 9.1A peak pulse current at the 10/1000µs waveform tells you the surge current it can handle — useful for sizing the TVS against the expected transient energy from inductive kicks or lightning-induced surges on a 120V supply. ## Package and field-fit Through-hole DO-201AA / DO-27 axial package — the leads are long enough to bend into existing PCB holes or splice into a terminal block. No hot-air station needed; a soldering iron and a pair of cutters is the full kit. Unidirectional — the cathode band matters. Reverse the polarity and it conducts like a forward-biased diode at the standoff voltage. Mark the band with a sharpie after installation so the next technician does not guess.","metaTitle":"1.5KE120A-E3/51 Vishay TVS, 1500W, 102V Standoff, DO-201AA","metaDescription":"Vishay 1.5KE120A-E3/51 TransZorb TVS, 1500W peak pulse, 102V standoff, 165V clamp. 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":"1.5KE120","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"114V","Voltage - Clamping (Max) @ Ipp":"165V","Voltage - Reverse Standoff (Typ)":"102V","Current - Peak Pulse (10/1000µs)":"9.1A"}},"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 voltage rail does the 1.5KE120A-/51 protect?","answer":"The 102V reverse standoff means it is designed for a nominal 100V or 120V DC bus — it will not leak or conduct at that voltage. Breakdown starts at 114V min, and clamping is at 165V max at the 9.1A peak pulse current."},{"question":"Where can I source the 1.5KE120A-/51 now?","answer":"Sourced through independent distribution channels against an RFQ. Submit an RFQ for your BOM quantity and the desk will confirm the lot and delivery."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE120A-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/1.5KE120A-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}}