{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE12ARL4G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE12ARL4G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE12ARL4G","factsUrl":"https://icboms.com/api/mcp/products/1.5KE12ARL4G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Mosorb™ series, Zener TVS diode, 1.5KE12ARL4G, 1500W (1.5kW) peak pulse power, 10.2V reverse standoff, 16.7V clamping, DO-201AD axial, through hole.","salesMarkdown":"## What the 1.5 kW rating means for a 10.2 V rail The 1.5KE12ARL4G: The breakdown voltage window starts at 11.4 V minimum, so the TVS stays transparent below the rail's normal regulation band and only conducts when a transient pushes the line above that threshold. The 10.2 V reverse standoff is the maximum DC voltage the part blocks without leakage becoming a concern. ## DO-201AD axial — what it connects to Packaged in a DO-201AD axial leaded form factor, the 1.5KE12ARL4G is a through-hole part. The axial leads insert into plated through-holes on the board; the body sits above the PCB, relying on the lead wire and the copper pad area on both sides for heat sinking during the pulse. No exposed pad — the junction-to-ambient thermal path runs through the leads and the solder fillets. The operating junction temperature range spans -65 °C to +175 °C, covering military and industrial thermal profiles. A 175 °C Tj max is typical for silicon avalanche diodes; the derating curve in the full datasheet governs how much peak power is available at elevated ambient temperatures. ## Obsolete — what that means for procurement Sourcing runs through independent surplus and broker channels. Inventory is lot-specific; quantities and date codes are confirmed at the time of an RFQ. No pin-compatible direct replacement from Littelfuse has been published, so a BOM substitution requires a parametric cross-check against the 10.2 V standoff, 1.5 kW pulse rating, and DO-201AD footprint.","metaTitle":"1.5KE12ARL4G Littelfuse Mosorb Zener TVS, 1.5kW, DO-201AD","metaDescription":"Littelfuse 1.5KE12ARL4G Mosorb Zener TVS diode, 1.5kW peak pulse power, 10.2V standoff, DO-201AD axial. Obsolete, 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); Cut Tape (CT)","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)":"11.4V","Voltage - Clamping (Max) @ Ipp":"16.7V","Voltage - Reverse Standoff (Typ)":"10.2V","Current - Peak Pulse (10/1000µs)":"90A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b2bad05ac2a782d44789dbfb00c46ecc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does 1.5KE12ARL4G use?","answer":"DO-201AD axial leaded, through-hole mounting. The supplier device package is also listed as Axial."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE12ARL4G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE12ARL4G 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}}