{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE51A","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE51A","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE51A","factsUrl":"https://icboms.com/api/mcp/products/1.5KE51A","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE51A, 1500W peak pulse, 70.1V clamp, 43.6V standoff, DO-201AA axial, through-hole.","salesMarkdown":"## 1500 W peak pulse, 70.1 V clamp — the transient budget The 1.5KE51A: The reverse standoff voltage is 43.6 V typical, meaning the diode draws negligible leakage below that rail voltage. Breakdown starts at a minimum of 48.5 V, giving a 4.9 V window between normal operation and the onset of conduction — tight enough for a 48 V bus but with enough margin to avoid nuisance clamping on ripple. ## Through-hole axial package, wide temperature range Housed in a DO-201AA (DO-27) axial leaded package, the 1.5KE51A is a through-hole part — it solders into a 1.1 mm diameter hole on the board and handles the reflow profile of a hand-solder or wave-solder line without issue. The junction temperature range spans -55°C to 175°C, so it survives the thermal cycling of outdoor or engine-bay environments.","metaTitle":"Littelfuse 1.5KE51A TVS Diode, 1500W, 70.1V Clamp","metaDescription":"Littelfuse 1.5KE51A Zener TVS, 1500W peak pulse, 70.1V clamping, 43.6V standoff. Active production. Sourced to order. Request a quote.","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":"Tape & Reel (TR) Cut Tape (CT)","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)":"48.5V","Voltage - Clamping (Max) @ Ipp":"70.1V","Voltage - Reverse Standoff (Typ)":"43.6V","Current - Peak Pulse (10/1000µs)":"21.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/149eca2cbf10498ecc0c7eab912fe9f4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I get pricing and availability for the 1.5KE51A?","answer":"Submit an RFQ through this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE51A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE51A 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}}