{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE30C","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE30C","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE30C","factsUrl":"https://icboms.com/api/mcp/products/1.5KE30C","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE Series Zener TVS Diode, 1.5KE30C, Bidirectional, 1500W Peak Pulse Power, 25.6V Reverse Standoff, DO-201AA Axial, Through Hole.","salesMarkdown":"## What the 1500W rating means for your board The 1.5KE30C: That 1500W figure tells you how much transient energy the part can absorb in a single pulse — not continuous dissipation. For a 36.7A peak pulse current, the diode clamps at 43.47V max, so a 24V rail sees the surge held under 44V before the TVS recovers. The reverse standoff voltage is 25.6V, meaning the diode stays off below that DC level and only starts conducting when the transient pushes above the minimum breakdown of 27V. ## Obsolete — what that means for procurement For existing BOM lines, the 1.5KE30C is available through independent surplus and broker channels. No pin-compatible direct replacement is documented by Littelfuse — a parametric search for a 1500W bidirectional TVS with similar standoff and clamping voltages will yield functional equivalents, but the DO-201 axial footprint and the exact breakdown window should be matched against the board's layout and protection margin. The 1.5KE30C comes in a DO-201AA (DO-27) axial-lead package, through-hole mount. The DO-201 body is larger than the common DO-41 — it handles the 1500W pulse without overheating the junction.","metaTitle":"1.5KE30C Littelfuse TVS Diode, 1500W, Bidirectional, DO-201","metaDescription":"Littelfuse 1.5KE30C bidirectional Zener TVS diode, 1500W peak pulse power, 25.6V standoff, DO-201 axial. Obsolete, sourced to order. Request a quote.","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":"Tape & Reel (TR)","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)":"27V","Voltage - Clamping (Max) @ Ipp":"43.47V","Voltage - Reverse Standoff (Typ)":"25.6V","Current - Peak Pulse (10/1000µs)":"36.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5KE30C?","answer":"Littelfuse does not publish an official successor or pin-compatible cross-reference for the 1.5KE30C. A functionally equivalent 1500W bidirectional TVS with a similar standoff voltage (25.6V) and DO-201 package would be a parametric match, but the exact breakdown and clamping window should be verified against the board's protection requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE30C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE30C 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}}