{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE27ARL4","brand":"onsemi","brandSlug":"onsemi","productSlug":"1.5KE27ARL4","canonicalUrl":"https://icboms.com/onsemi/1.5KE27ARL4","factsUrl":"https://icboms.com/api/mcp/products/1.5KE27ARL4","rawCanonicalId":null},"summary":{"shortDescription":"onsemi Mosorb™ series, Zener TVS diode, 1500W peak pulse power, 25.7V breakdown min, DO-201AD axial through-hole package, Tape & Reel, obsolete.","salesMarkdown":"## 1500W Zener TVS in a DO-201AD axial body The 1.5KE27ARL4 is a unidirectional Zener TVS diode from onsemi's Mosorb™ series, rated for 1500W peak pulse power at 10/1000µs waveform. Its 25.7V minimum breakdown voltage and 23.1V reverse standoff make it a fit for 24V rail clamping in general-purpose circuit protection. ## Clamping performance and temperature range At the 10/1000µs test pulse, the clamping voltage max is 37.5V at 40A peak pulse current — that is the ceiling the protected circuit sees during a surge event. Operating junction temperature spans -65°C to 175°C, so it holds up in engine-bay or outdoor telecom enclosures without derating at the hot end. ## Obsolete — plan replacement or last-time-buy onsemi lists the 1.5KE27ARL4 as Obsolete. No direct successor is published under the 1.5KE base number. For existing BOMs, a last-time-buy or a parametric cross to a current 1.5KE27A variant in the same DO-201AD package is the practical path.","metaTitle":"1.5KE27ARL4 onsemi Zener TVS Diode 1500W 25.7V DO-201AD","metaDescription":"onsemi 1.5KE27ARL4 Mosorb™ Zener TVS, 1500W peak pulse, 25.7V breakdown, DO-201AD axial. Obsolete — source replacement or last-time-buy via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","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":"eol_hot","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)":"25.7V","Voltage - Clamping (Max) @ Ipp":"37.5V","Voltage - Reverse Standoff (Typ)":"23.1V","Current - Peak Pulse (10/1000µs)":"40A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/717ad1fc0ab391931f54c66e75e89e87.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order 1.5KE27ARL4 or check stock?","answer":"The 1.5KE27ARL4 is obsolete per onsemi. We source and quote it to order against your BOM line — submit an RFQ for current availability and pricing. No stock-holding claim; lead time confirmed at quote."},{"question":"What is the equivalent replacement for 1.5KE27ARL4?","answer":"onsemi does not list a direct successor under the 1.5KE base number. A parametric cross to a current-production 1.5KE27A in the same DO-201AD axial package is the closest drop-in candidate — verify the breakdown voltage and clamping specs match your rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/1.5KE27ARL4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/1.5KE27ARL4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:12:56.685Z","lastPublished":"2026-07-17T20:12:56.685Z","indexable":true}}