{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE33-E3/54","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5KE33-E3-54","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE33-E3-54","factsUrl":"https://icboms.com/api/mcp/products/1.5KE33-E3%2F54","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division TransZorb® series, Zener TVS diode, 1.5KE33-/54, 1500W peak pulse, 26.8V standoff, DO-201AA axial-lead, through-hole.","salesMarkdown":"## Obsolete TransZorb — what the ratings mean for fit The 1.5KE33-E3/54: This is a single unidirectional channel in a through-hole DO-201AA (DO-27) axial package. The 47.7 V clamp means the protected rail sees no more than that voltage during a surge — critical for downstream 24 V or 28 V bus components that must survive transients without secondary breakdown. ## Lifecycle reality — obsolete, no official successor Vishay has marked the 1.5KE33-/54 as Obsolete. No replacement order code is recorded from the manufacturer. For a BOM that requires this exact clamp voltage and package, the only sourcing path is the spot market. Read the PCN before you buy — date-code provenance and lot traceability matter more here than on an active part. ## Temperature range and package fit The DO-201AA axial lead package mounts through-hole, which simplifies rework and prototyping but occupies more board area than a surface-mount equivalent.","metaTitle":"1.5KE33-E3/54 Vishay TransZorb Zener TVS, 1500W, 26.8V","metaDescription":"Obsolete Vishay 1.5KE33-E3/54 Zener TVS diode, 1500W peak pulse, 26.8V standoff, 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":"1.5KE33","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"1.5KE","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"29.7V","Voltage - Clamping (Max) @ Ipp":"47.7V","Voltage - Reverse Standoff (Typ)":"26.8V","Current - Peak Pulse (10/1000µs)":"31.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cbd949ebcf4c95d5b4ea8fdecf87536f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 1.5KE33-/54?","answer":"No stock-holding claim is made."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5KE33-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/1.5KE33-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}}