{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE33","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE33","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE33","factsUrl":"https://icboms.com/api/mcp/products/1.5KE33","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5KE series Zener TVS diode, unidirectional, 1500W peak pulse power, 28.2V standoff, DO-201AA axial, Tape & Reel.","salesMarkdown":"## Through-hole axial — board-fit and rework note Housed in a DO-201AA (DO-27) axial leaded package, the 1.5KE33 mounts through-hole. The DO-201 footprint is standard for this power class — the axial leads carry the surge current into the die without the trace-width constraints of a surface-mount pad. For rework, the leads tolerate standard soldering iron temperatures; no special bake-out profile is needed. ## Obsolete — sourcing posture Marked obsolete by Littelfuse. For a 24 V rail protection socket, a parametric equivalent (same package, same 1500 W rating, similar standoff) can be sourced; the BOM line should be reviewed for a drop-in alternative if volume commitments extend beyond current inventory. ## Temperature and application envelope The device is marked as general-purpose; no power-line protection (no internal series element), so it is a shunt-only clamp for signal or DC bus protection.","metaTitle":"Littelfuse 1.5KE33 Zener TVS Diode, 1500W, DO-201","metaDescription":"Littelfuse 1.5KE33 unidirectional Zener TVS diode, 1500W peak pulse power, 28.2V standoff, DO-201 axial. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5KE","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":"1.5KE","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"29.75V","Voltage - Clamping (Max) @ Ipp":"47.99V","Voltage - Reverse Standoff (Typ)":"28.2V","Current - Peak Pulse (10/1000µs)":"33.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6835","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1.5KE33 and how is it quoted?","answer":"The 1.5KE33 is obsolete but available through independent distribution. No stock-holding claim; each lot is verified for traceability and authenticity before shipment."},{"question":"What package does the 1.5KE33 come in?","answer":"It is supplied in a DO-201AA (DO-27) axial leaded package, through-hole mount, available in Tape & Reel packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE33","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE33 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}}