{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE440-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE440-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE440-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE440-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® series, TVS Zener, Type Zener, 1.5KE440-/54, 1500W peak pulse, DO-201AA axial, through hole.","salesMarkdown":"## Obsolete — sourcing the 1.5KE440-E3/54 today The Vishay 1.5KE440-/54 is officially marked as Obsolete by the manufacturer, meaning Vishay no longer produces this TransZorb series TVS diode in the DO-201AA axial package. No official successor part number is recorded from Vishay for this specific order code. Sourcing relies on the independent surplus and broker channel, where lots are verified for date-code authenticity and traceability before quotation. ## 1500W peak pulse — what the ratings mean for fit The reverse standoff voltage of 356V means the diode stays in high-impedance mode below that DC rail level — it only starts conducting when the transient exceeds the minimum breakdown threshold of 396V. With an operating junction temperature range from -55°C to 175°C, the 1.5KE440 holds its clamping spec across the full industrial and military temperature envelope — relevant for outdoor telecom rectifiers or 400V rail protection in motor drives. Housed in a DO-201AA (DO-27) axial-leaded package, the 1.5KE440 is a through-hole component — the lead spacing and body diameter match the standard TVS footprint used across the TransZorb 1.5KE family. Tape and Reel (TR) packaging for this order code means the parts arrive on a reel suitable for automatic insertion equipment, not bulk or ammo pack.","metaTitle":"Vishay 1.5KE440-E3/54 TVS Diode, 1500W, 631V Clamp","metaDescription":"Obsolete Vishay TransZorb 1.5KE440-E3/54 TVS diode, 1500W peak pulse, 631V clamping, DO-201AA. Sourced to order against RFQ through independent distribution.","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":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","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)":"396V","Voltage - Clamping (Max) @ Ipp":"631V","Voltage - Reverse Standoff (Typ)":"356V","Current - Peak Pulse (10/1000µs)":"2.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE440-/54 come in?","answer":"It uses a DO-201AA (DO-27) axial-leaded through-hole package. The supplier device package is designated 1.5KE, matching the standard TransZorb footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE440-E3-54","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/1.5KE440-E3-54 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}}