{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE20-B","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE20-B","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE20-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE20-B","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE20-B, 1500W peak pulse power, 17.1V reverse standoff, DO-201AA axial-lead package, bulk.","salesMarkdown":"## Obsolete 1.5KE20-B — sourcing reality for a discontinued TVS The 1.5KE20-B is marked Obsolete by Littelfuse, meaning the factory line has stopped and no further production runs are scheduled. Reverse standoff voltage is 17.1V, so the diode does not conduct at normal DC bus levels up to that point; breakdown begins at 18V minimum. ## Package and temperature — through-hole fit for high-reliability boards Supplied in the DO-201AA (DO-27) axial-lead package, through-hole mount, with the DO-201 supplier device package designation. Operating junction temperature range spans -55°C to 175°C, covering military and industrial thermal environments without derating concerns.","metaTitle":"1.5KE20-B Littelfuse TVS Diode, 1500W, 17.1V Standoff","metaDescription":"Littelfuse 1.5KE20-B Zener TVS diode, 1500W peak pulse power, 17.1V reverse standoff, DO-201 package. Obsolete status; 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":"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","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"18V","Voltage - Clamping (Max) @ Ipp":"29.09V","Voltage - Reverse Standoff (Typ)":"17.1V","Current - Peak Pulse (10/1000µs)":"54.9A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE20-B/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE20-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/1.5KE20-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}}