{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE120A-TB","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE120A-TB","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE120A-TB","factsUrl":"https://icboms.com/api/mcp/products/1.5KE120A-TB","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE Series Zener TVS Diode, 1.5KE120A-TB, 1500W Peak Pulse Power, 102V Reverse Standoff, 165V Clamping, 9.2A Peak Pulse Current, DO-201AA Axial, Bulk.","salesMarkdown":"## 1500 W peak pulse — what that rating actually means for your protection design The 1.5KE120A-TB: That 1500 W figure is tied to that specific pulse shape: a shorter-duration surge (e.g. 8/20 µs) allows a higher peak current, while a longer pulse requires derating. For a 10/1000 µs event, the device clamps at 165 V while conducting 9.2 A — this is the voltage the downstream circuit sees during the surge. The reverse standoff voltage is 102 V, meaning the TVS does not conduct at normal line voltage up to that level. Breakdown occurs at a minimum of 114 V, so there is a 12 V window between the maximum operating voltage and the onset of clamping — enough margin for most 100 V nominal rails. ## Through-hole DO-201 package — board integration and thermal path The part comes in a DO-201AA / DO-27 axial-lead package, through-hole mounted. The lead bend and the hole spacing on the PCB must match the body length — typically about 7.6 mm body diameter and 5.1 mm body length — to keep the device mechanically stable and to allow the leads to conduct heat into the board copper. At the high end, leakage current rises significantly — expect the standby current to be orders of magnitude higher at 175°C than at 25°C, so factor that into any always-powered circuit's quiescent budget.","metaTitle":"Littelfuse 1.5KE120A-TB Zener TVS, 1500W, 102V Standoff","metaDescription":"Littelfuse 1.5KE120A-TB Zener TVS diode, 1500W peak pulse power, 102V reverse standoff, 165V clamp at 9.2A. Active production. DO-201 axial. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"Active","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)":"114V","Voltage - Clamping (Max) @ Ipp":"165V","Voltage - Reverse Standoff (Typ)":"102V","Current - Peak Pulse (10/1000µs)":"9.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2611","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I get pricing and availability for the 1.5KE120A-TB?","answer":"Pricing and current stock are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE120A-TB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE120A-TB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}