{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE91","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE91","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE91, 77.8V reverse standoff, 131.25V clamp, 1.5kW peak pulse, DO-201AA axial, Tape & Reel.","salesMarkdown":"## Obsolete — sourcing through independent channels Littelfuse lists the 1.5KE91 as obsolete. ## Package and temperature range Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE91 is a through-hole part — hand-solderable and easy to breadboard or prototype with.","metaTitle":"1.5KE91 Littelfuse TVS Diode, 77.8V Standoff, 1.5kW","metaDescription":"Littelfuse 1.5KE91 Zener TVS, 77.8V standoff, 131.25V clamp, 1.5kW peak pulse. Obsolete — sourced to order. RFQ for availability.","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)":"81.9V","Voltage - Clamping (Max) @ Ipp":"131.25V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6835","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE91/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5KE91?","answer":"No official pin-compatible successor is listed by Littelfuse. A functional replacement would be another 1.5KE-series TVS with a similar 77.8 V standoff and 1.5 kW rating, but the exact breakdown and clamp voltages must be cross-checked against your design's protection threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE91","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE91 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}}