{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE56C-B","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE56C-B","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE56C-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE56C-B","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5KE series Zener TVS diode, 1500W peak pulse power, 47.8V reverse standoff, 50.4V breakdown, 80.85V clamping, bidirectional, DO-201AA axial package, bulk.","salesMarkdown":"Littelfuse has marked the 1.5KE56C-B as obsolete. ## Key ratings and what they mean for circuit protection The 47.8V reverse standoff voltage means the device does not conduct below that DC level — it sits across the rail and only clamps when a transient pushes the line above the 50.4V minimum breakdown threshold. At the full 19.7A peak pulse current, the clamping voltage reaches 80.85V max. Through-hole DO-201AA (DO-27) axial package, supplier device package DO-201. The axial leads suit point-to-point wiring or through-hole PCB mounting — the body diameter and lead spacing are standard for the 1.5 kW class.","metaTitle":"1.5KE56C-B Littelfuse TVS Diode, 1500W, Bidirectional","metaDescription":"1.5KE56C-B Littelfuse Zener TVS, 1500W peak pulse, 47.8V standoff, DO-201. Obsolete — sourced to order against RFQ through independent distribution.","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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"50.4V","Voltage - Clamping (Max) @ Ipp":"80.85V","Voltage - Reverse Standoff (Typ)":"47.8V","Current - Peak Pulse (10/1000µs)":"19.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE56C-B/alternatives.json"},"ai":{"faq":[{"question":"What is the 1.5KE56C-B used for?","answer":"It clamps voltage transients on DC power rails or signal lines up to 1500W peak pulse power, protecting downstream components from surges like load dump or inductive kickback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE56C-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/1.5KE56C-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}}