{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE33AG","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE33AG","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE33AG","factsUrl":"https://icboms.com/api/mcp/products/1.5KE33AG","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. Mosorb™ series, Zener TVS diode, 1.5KE33AG, 1500W peak pulse power, 28.2V reverse standoff, 45.7V clamping, DO-201AD axial leaded package, bulk.","salesMarkdown":"## What the 1500 W rating means for your board The 1.5KE33AG: The reverse standoff voltage is 28.2 V, meaning the diode stays off below that level and only starts conducting when the transient exceeds it. Breakdown occurs at a minimum of 31.4 V, so there is a 3.2 V window between normal rail operation and the onset of clamping — enough headroom for a 24 V bus with tolerance. ## Through-hole axial package — still a breadboard-friendly choice Housed in a DO-201AD axial-leaded package, the 1.5KE33AG is a through-hole part. The two axial leads solder into plated through-holes on the board — no reflow profile, no paste stencil, just a soldering iron and a clean joint. For a hobbyist or a repair tech swapping a blown suppressor on a power supply, this is the easiest package to work with: you can hand-solder it in under a minute. The operating temperature range spans -65°C to 175°C (junction), which covers everything from outdoor telecom cabinets to engine-bay electronics. The wide range also means the leakage current at high temperature stays within the datasheet limits — a concern for low-power circuits where a few microamps of standby leakage matter. ## Obsolete — sourcing reality for the 1.5KE33AG Littelfuse has marked the 1.5KE33AG as Obsolete. That means the manufacturer no longer produces it, and no official successor order code is listed. Because the part is a single unidirectional Zener TVS in a standard DO-201AD package, functionally equivalent alternatives exist from other brands (e.g., similar 1500 W, 28 V standoff parts in the same footprint). If you are sourcing for a repair or a legacy design, we can quote the 1.5KE33AG against your BOM quantity.","metaTitle":"1.5KE33AG Littelfuse Mosorb™ Zener TVS, 1500W, DO-201AD","metaDescription":"Littelfuse 1.5KE33AG Zener TVS diode, 1500W peak pulse, 28.2V standoff, DO-201AD axial. Obsolete — sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"Mosorb™","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AD, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE","Operating Temperature":"-65°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"31.4V","Voltage - Clamping (Max) @ Ipp":"45.7V","Voltage - Reverse Standoff (Typ)":"28.2V","Current - Peak Pulse (10/1000µs)":"33A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b2bad05ac2a782d44789dbfb00c46ecc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1.5KE33AG and get a price?","answer":"We source the 1.5KE33AG through independent distribution and surplus inventory. Pricing and current availability are confirmed when you submit an RFQ against your target quantity — no stock-holding claim, no automated price. Request a quote and we will check the open market for you."},{"question":"What is the closest pin-compatible alternative to the 1.5KE33AG?","answer":"Because the 1.5KE33AG is a standard DO-201AD axial Zener TVS with 1500 W peak pulse power and 28.2 V standoff, many other brands offer functionally equivalent parts in the same footprint. For a specific BOM replacement, we can research alternatives at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE33AG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE33AG 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}}