{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE9.1-B","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE9.1-B","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE9.1-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE9.1-B","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE9.1-B, 1500W peak pulse power, 7.78V reverse standoff, 14.07V clamping, DO-201AA axial leaded, bulk.","salesMarkdown":"## 1500W transient suppressor for 7.78V rails The 1.5KE9.1-B: It clamps transients on a 7.78V nominal rail to 14.07V maximum, with a breakdown voltage range starting at 8.17V. ## What the clamping voltage means for your protected circuit The 14.07V clamp ensures the downstream IC sees no more than that peak, which is within the abs-max rating of most 12V-tolerant logic and power-management devices. The 113.4A peak pulse current rating (at 10/1000µs) means it can absorb a substantial lightning-induced or inductive-load dump surge without failing short — the 1500W peak pulse power is the product of clamp voltage and current at that waveform. ## DO-201 axial package — board integration note The DO-201AA (DO-27) axial leaded package is a through-hole form factor with a 0.052-inch lead diameter, designed for wave-solder assembly or hand-soldering into plated through-holes. The bulk packaging means parts are loose in a bag or tube — no tape-and-reel for automated pick-and-place.","metaTitle":"Littelfuse 1.5KE9.1-B TVS Diode, 1500W, 7.78V Standoff","metaDescription":"Littelfuse 1.5KE9.1-B Zener TVS diode, 1500W peak pulse power, 7.78V 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","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"8.17V","Voltage - Clamping (Max) @ Ipp":"14.07V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"113.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/149eca2cbf10498ecc0c7eab912fe9f4.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE9.1-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/1.5KE9.1-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}}