{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE120ARL","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"1.5KE120ARL","canonicalUrl":"https://icboms.com/stmicroelectronics/1.5KE120ARL","factsUrl":"https://icboms.com/api/mcp/products/1.5KE120ARL","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics 1.5KE120ARL, TRANSIL™ series, unidirectional TVS diode, 1500W peak pulse power, 114V breakdown, 212V clamping, DO-201AA axial package.","salesMarkdown":"## 1500W transient suppressor — what it protects It clamps voltage transients on DC power rails and signal lines in general-purpose industrial and telecom equipment. The 1.5KE120ARL is listed as obsolete. ## What the 1500W and 47A ratings mean for your board The 1500W peak pulse power rating (10/1000µs) tells you the diode can absorb a 1.5 kW transient lasting one millisecond without failing — enough for typical surge events on a 100V bus in an industrial controller or a telecom line card. The 1000pF capacitance at 1MHz is moderate; it adds a small load on a signal line but is fine for DC power protection. The DO-201 axial package is through-hole, so it mounts into a drilled PCB or a terminal block — no reflow profile needed, but the leads need to be formed and inserted before wave soldering.","metaTitle":"1.5KE120ARL TRANSIL™ TVS Diode, 1500W, 114V Breakdown","metaDescription":"1.5KE120ARL is a 1500W unidirectional TRANSIL™ TVS diode from STMicroelectronics, with 114V breakdown and 212V clamping.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"1.5KE, TRANSIL™","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE","Operating Temperature":"-","Power Line Protection":"No","Capacitance @ Frequency":"1000pF @ 1MHz","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"114V","Voltage - Clamping (Max) @ Ipp":"212V","Voltage - Reverse Standoff (Typ)":"102V","Current - Peak Pulse (10/1000µs)":"47A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/089e26c8bbf5e28593f663899fc6cea1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE120ARL/alternatives.json"},"ai":{"faq":[{"question":"Is 1.5KE120ARL obsolete and what is the replacement?","answer":"Yes, the 1.5KE120ARL is obsolete. STMicroelectronics does not list a direct successor order code, but the 1.5KE family includes other 1500W unidirectional TVS diodes in the same DO-201 package with different breakdown voltage options. For a 100V rail application, a part with a similar standoff voltage in the same family is the closest functional match."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/1.5KE120ARL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/1.5KE120ARL when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:42:12.972Z","lastPublished":"2026-07-16T15:42:12.972Z","indexable":true}}