{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE440A-E3/51","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE440A-E3-51","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE440A-E3-51","factsUrl":"https://icboms.com/api/mcp/products/1.5KE440A-E3%2F51","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® TVS, Type Zener, 1.5KE440A-/51, 1500W, 376V Standoff, DO-201AA Axial, Bulk.","salesMarkdown":"## What the 1500W peak pulse rating means for your board The 1.5KE440A-E3/51: For a 376 V reverse standoff (the voltage it ignores during normal operation), it breaks down at 418 V minimum and clamps the transient to 602 V maximum at 2.5 A peak pulse current. This is a unidirectional Zener-type TVS, so it protects a single polarity rail; the cathode band goes toward the positive supply. ## Through-hole axial package and temperature range Housed in a DO-201AA (DO-27) axial-lead package, it's a through-hole part — hand-solderable and easy to breadboard or retrofit into an existing PCB. ## Obsolete — sourcing through independent channels Vishay lists the 1.5KE440A-/51 as obsolete. No pin-compatible direct replacement is documented, so a board spin may be needed if you're migrating to a current-generation TVS.","metaTitle":"1.5KE440A-E3/51 Vishay TransZorb TVS, 1500W, 376V Standoff","metaDescription":"Obsolete Vishay 1.5KE440A-E3/51 TransZorb TVS diode, 1500W peak pulse, 376V standoff, DO-201AA axial. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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":"1.5KE440","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"418V","Voltage - Clamping (Max) @ Ipp":"602V","Voltage - Reverse Standoff (Typ)":"376V","Current - Peak Pulse (10/1000µs)":"2.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2500","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 1.5KE440A-/51?","answer":"No official pin-compatible successor is listed by Vishay. The 1.5KE series includes many voltage variants, but a direct drop-in replacement at the same 376 V standoff is not documented. A parametric search for a 1500 W, unidirectional TVS in DO-201AA with a similar breakdown voltage is the practical path."},{"question":"What compliance documentation does Vishay provide for 1.5KE440A-/51?","answer":"Standard Vishay TransZorb TVS diodes in this series are typically RoHS-compliant, but that is not confirmed here. Request the manufacturer's compliance declaration at RFQ time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE440A-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/1.5KE440A-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}}