{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE33C-B","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE33C-B","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE33C-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE33C-B","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5KE series, Type Zener, Bidirectional TVS Diode, 1.5KE33C-B, 1500W Peak Pulse, 28.2V Reverse Standoff, DO-201AA/DO-27 Axial, Through Hole, Bulk.","salesMarkdown":"## Key TVS ratings and what they mean for circuit protection The 1.5KE33C-B: The 28.2 V reverse standoff voltage means the device does not conduct at normal rail voltage up to that level; it clamps transients at 47.99 V max while shunting 33.3 A peak current. Bidirectional (single channel) — a single DO-201 package protects against both positive and negative surges, simplifying the BOM for AC lines or bipolar DC rails where polarity is not fixed. ## Package and board-fit — DO-201 axial leaded The 0.052-inch lead diameter fits standard 1.0 mm PCB holes; the body is 9.1 mm long, so axial lead forming or vertical mounting is required for dense layouts. Supplied in bulk (tube or bag) — not tape-and-reel, so hand-insertion or tube-fed auto-insertion is the assembly path. No power line protection (no internal filter); this is a pure transient clamp for signal or secondary DC rails.","metaTitle":"Littelfuse 1.5KE33C-B TVS Diode, 1500W, 28.2V Standoff","metaDescription":"Obsolete Littelfuse 1.5KE33C-B bidirectional TVS, 1500W peak pulse, 28.2V standoff, DO-201 package.","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":"Bulk","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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key clamping specifications for the 1.5KE33C-B?","answer":"Reverse standoff voltage is 28.2 V, minimum breakdown is 29.75 V, and maximum clamping voltage is 47.99 V at 33.3 A peak pulse current (10/1000 µs waveform)."},{"question":"What package does the 1.5KE33C-B come in?","answer":"It is supplied in a DO-201AA / DO-27 axial leaded through-hole package, with the supplier device package designated as DO-201. The part ships in bulk."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE33C-B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE33C-B 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}}