{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE39ARL4","brand":"onsemi","brandSlug":"onsemi","productSlug":"1.5KE39ARL4","canonicalUrl":"https://icboms.com/onsemi/1.5KE39ARL4","factsUrl":"https://icboms.com/api/mcp/products/1.5KE39ARL4","rawCanonicalId":null},"summary":{"shortDescription":"onsemi Mosorb™ series, Zener TVS diode, 1.5KE39ARL4, 1500W peak pulse power, 33.3V reverse standoff, DO-201AD axial package, through-hole mount.","salesMarkdown":"## Surge rating and clamping for 24V rails The 1.5KE39ARL4 is a 1500W peak pulse power Zener TVS diode from the onsemi Mosorb™ series. Its 33.3V reverse standoff voltage makes it a natural fit for protecting 24V DC power rails — the clamping voltage at 28A peak pulse current (10/1000µs waveform) is 53.9V, which keeps transients off downstream silicon rated for 60V or higher. ## Temperature range and package Operating junction temperature spans -65°C to 175°C, covering engine-bay and outdoor telecom enclosures without derating. The DO-201AD axial package suits through-hole assembly — the lead bend absorbs board flex better than a surface-mount TVS in high-vibration environments. ## Obsolete — plan the BOM transition onsemi has marked the 1.5KE39ARL4 as Obsolete. No official successor is listed in the product status. For existing designs, a last-time buy or a cross to a current-production 1.5KE series variant (e.g., 1.5KE39A in the same DO-201AD package) should be evaluated.","metaTitle":"1.5KE39ARL4 onsemi Zener TVS Diode – 1500W, DO-201AD","metaDescription":"onsemi 1.5KE39ARL4 Zener TVS diode, 1500W peak pulse power, 33.3V standoff, DO-201AD axial package. Now obsolete – confirm BOM fit and replacement options.","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); Cut Tape (CT)","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)":"37.1V","Voltage - Clamping (Max) @ Ipp":"53.9V","Voltage - Reverse Standoff (Typ)":"33.3V","Current - Peak Pulse (10/1000µs)":"28A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/717ad1fc0ab391931f54c66e75e89e87.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between 1.5KE39ARL4 and 1.5KE39A?","answer":"The 1.5KE39ARL4 suffix indicates tape-and-reel packaging, while the 1.5KE39A is typically supplied in bulk or ammo pack. Both share the same DO-201AD package, 33.3V standoff, and 1500W peak pulse rating. The RL4 suffix is a packaging code — the silicon die is identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/1.5KE39ARL4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/1.5KE39ARL4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:12:59.211Z","lastPublished":"2026-07-17T20:12:59.211Z","indexable":true}}