{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE47-B","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE47-B","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE47-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE47-B","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5KE series Zener TVS diode, 1.5KE47-B, 1500W peak pulse power, 40.2V reverse standoff, 68.04V clamping, DO-201AA axial, bulk.","salesMarkdown":"## 1500 W axial TVS for legacy rail protection The Littelfuse 1.5KE47-B is a 1500 W peak-pulse-power Zener TVS diode in the through-hole DO-201AA (DO-27, axial) package. It clamps a 40.2 V reverse standoff rail at 68.04 V while handling a 23.5 A peak pulse current (10/1000 µs waveform). The 42.35 V minimum breakdown voltage sits above the 40.2 V standoff, so the device stays transparent during normal line operation and only conducts when the transient exceeds the threshold. Littelfuse lists the 1.5KE47-B as Obsolete. Availability and pricing are confirmed at RFQ against the specific BOM quantity. The DO-201 axial body is a standard through-hole footprint — it mounts into a drilled PCB or terminal strip and is often paired with a series fuse or PTC for coordinated overvoltage/overcurrent protection.","metaTitle":"Littelfuse 1.5KE47-B TVS Diode, 1500W, 40.2V Standoff","metaDescription":"Littelfuse 1.5KE47-B Zener TVS diode, 1500W peak pulse power, 40.2V reverse standoff, DO-201 axial. Obsolete — 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)":"42.35V","Voltage - Clamping (Max) @ Ipp":"68.04V","Voltage - Reverse Standoff (Typ)":"40.2V","Current - Peak Pulse (10/1000µs)":"23.5A"}},"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":"What is the peak pulse power rating of the 1.5KE47-B?","answer":"The 1.5KE47-B is rated for 1500 W (1.5 kW) peak pulse power dissipation under a 10/1000 µs waveform."},{"question":"What package does the 1.5KE47-B come in?","answer":"It is supplied in a through-hole DO-201AA (DO-27, axial) package, shipped in bulk."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE47-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/1.5KE47-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}}