{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE15ARL4G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE15ARL4G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE15ARL4G","factsUrl":"https://icboms.com/api/mcp/products/1.5KE15ARL4G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Mosorb™ series, Zener TVS diode, 1.5KE15ARL4G, 1500W peak pulse, 12.8V standoff, 71A Ipp, DO-201AD axial, through hole.","salesMarkdown":"## What the 1500W peak pulse rating means for your protection design The 1.5KE15ARL4G is a 1500 W peak-pulse-power Zener TVS diode from the Littelfuse Mosorb series, clamping at 21.2 V maximum on a 71 A, 10/1000 µs surge waveform. That 1500 W rating is the absolute-maximum non-repetitive pulse — the device absorbs the surge and clamps the voltage below the downstream circuit's breakdown threshold, but only if the pulse energy stays within the single-pulse derating curve. ## Trigger threshold and standoff — where the TVS starts protecting Reverse standoff voltage is 12.8 V typical, meaning the TVS draws negligible leakage below that rail voltage. Breakdown occurs at 14.3 V minimum, so on a 12 V bus the device stays out of the circuit until a transient pushes the line past 14.3 V — then it clamps hard at 21.2 V maximum. That 6.9 V window between standoff and clamp is the margin the protected load must survive. ## Temperature range and deployment context In a sealed enclosure or near a hot power supply, derate the peak pulse power above 25°C per the datasheet curve; at 175°C the 1500 W rating drops to approximately 150 W. ## Obsolete — sourcing the 1.5KE15ARL4G today Littelfuse lists the 1.5KE15ARL4G as obsolete.","metaTitle":"1.5KE15ARL4G Littelfuse Zener TVS, 1500W, DO-201AD","metaDescription":"1.5KE15ARL4G Littelfuse Mosorb Zener TVS diode, 1500W peak pulse, 12.8V standoff, 71A Ipp. Obsolete, sourced to order. Request quote.","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)":"14.3V","Voltage - Clamping (Max) @ Ipp":"21.2V","Voltage - Reverse Standoff (Typ)":"12.8V","Current - Peak Pulse (10/1000µs)":"71A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b2bad05ac2a782d44789dbfb00c46ecc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1.5KE15ARL4G and get a price?","answer":"The 1.5KE15ARL4G is obsolete but available through independent distribution. No stock-holding claim; each lot is sourced per request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE15ARL4G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE15ARL4G 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}}