{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE30ARL4G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE30ARL4G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE30ARL4G","factsUrl":"https://icboms.com/api/mcp/products/1.5KE30ARL4G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. Mosorb™ series Zener TVS diode, 1.5KE30ARL4G, 1500W peak pulse power, 25.6V reverse standoff, 41.4V clamping, DO-201AD axial, Tape & Reel.","salesMarkdown":"## What the 1.5KE30ARL4G protects and where it sits Its 25.6V reverse standoff voltage means it stays transparent on a 24V nominal rail, only clamping when a transient pushes the line above 28.5V breakdown. The 41.4V clamp at 36A peak pulse current is the voltage the downstream silicon sees — a downstream DC-DC converter rated for 60V abs-max has margin here, but a 40V-rated input stage does not. Littelfuse lists the 1.5KE30ARL4G as Obsolete. No pin-compatible drop-in from the original factory is available; a functional replacement will require a different order code and possibly a package spin. ## Thermal and mechanical fit The DO-201AD axial body is a through-hole package — the leads solder into plated through-holes on the board, not a surface-mount pad. Operating junction temperature spans -65°C to 175°C, which covers the full industrial and most automotive under-hood ambient ranges. The Tape & Reel packaging suits automated insertion if the line still runs axial components, though many modern pick-and-place lines have retired the feeder for this form factor.","metaTitle":"Littelfuse 1.5KE30ARL4G Mosorb Zener TVS, 1500W, DO-201AD","metaDescription":"Littelfuse 1.5KE30ARL4G obsolete Mosorb Zener TVS diode, 1500W peak pulse, 25.6V standoff, 41.4V clamp, DO-201AD axial. 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":"Mosorb™","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AD, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE","Operating Temperature":"-65°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"Axial","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"28.5V","Voltage - Clamping (Max) @ Ipp":"41.4V","Voltage - Reverse Standoff (Typ)":"25.6V","Current - Peak Pulse (10/1000µs)":"36A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b2bad05ac2a782d44789dbfb00c46ecc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE30ARL4G come in?","answer":"It is a through-hole DO-201AD axial package, supplied in Tape & Reel. The operating temperature range is -65°C to 175°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE30ARL4G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE30ARL4G 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}}