{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE200","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE200","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE200","factsUrl":"https://icboms.com/api/mcp/products/1.5KE200","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE200, 1500W peak pulse power, 171V reverse standoff, 287.7V clamping, unidirectional, DO-201AA axial package, Tape & Reel.","salesMarkdown":"## What the 287.7V clamp means for your rail The 1.5KE200: Its 171V reverse standoff voltage means it sits across a 170V DC bus without conducting leakage; when a transient exceeds the 180V minimum breakdown, it clamps at 287.7V maximum, shunting up to 5.5A of surge current to protect downstream silicon. The 1500W rating at 25°C derates with temperature — at 175°C junction the power capability drops to near zero, so the thermal path from the DO-201 body to the board is what actually determines surge survivability in a hot enclosure. ## DO-201 axial package — board-fit reality The DO-201AA (DO-27) axial-leaded package is a through-hole form factor that requires a drilled PCB with 1.0mm to 1.3mm hole diameter per the package drawing. The body diameter is about 5.3mm and the overall length including leads is roughly 9.1mm — this footprint has been standard for decades, so the replacement part will share the same hole pattern if it stays in the same package. Tape & Reel packaging means the axial leads are formed and taped for automatic insertion — verify the lead spacing on the reel matches your insertion machine's feed pitch before committing to a reel quantity. ## Temperature range and application limits The spec explicitly states 'Power Line Protection: No' — this is a signal-line or low-voltage DC bus protector, not a mains AC surge suppressor. Do not use it on 120/240VAC power entry without additional series impedance and coordination with upstream overcurrent protection. ## Obsolete — what that means for procurement Sourcing is through independent distribution — surplus inventory, new-old-stock, or broker channels. Availability is lot-specific and confirmed at RFQ time.","metaTitle":"1.5KE200 Littelfuse TVS Diode, 1.5kW, DO-201, Obsolete","metaDescription":"Littelfuse 1.5KE200 Zener TVS diode, 1500W peak pulse, 171V standoff, 287.7V clamp. DO-201 axial 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":"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)":"180V","Voltage - Clamping (Max) @ Ipp":"287.7V","Voltage - Reverse Standoff (Typ)":"171V","Current - Peak Pulse (10/1000µs)":"5.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE200 come in?","answer":"It is supplied in a DO-201AA (also known as DO-27) axial-leaded through-hole package. It is available in Tape & Reel packaging for automatic insertion."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE200","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE200 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}}