{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE33CARL","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"1.5KE33CARL","canonicalUrl":"https://icboms.com/stmicroelectronics/1.5KE33CARL","factsUrl":"https://icboms.com/api/mcp/products/1.5KE33CARL","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics 1.5KE series 1.5KE33CARL bidirectional Zener TVS diode, 1500W peak pulse power, 28.2V reverse standoff, 31.4V breakdown, 59V clamping, DO-201AA axial package.","salesMarkdown":"## Transient protection for 28 V rails — 1500 W rating Its 28.2 V reverse standoff voltage suits 24 V nominal systems where the rail can ride up to 28 V during normal operation. The breakdown voltage range starts at 31.4 V, and clamping is limited to 59 V at the peak pulse current of 169 A (8/20 µs waveform). Peak pulse power handling is 1500 W (10/1000 µs), which covers most industrial surge requirements for a 24 V bus. That saves board space and BOM count compared to placing two unidirectional TVS diodes back-to-back. The capacitance is 1350 pF at 1 MHz — typical for a 1.5 kW axial TVS — so it is fine for DC power protection but may load high-speed signal lines above a few MHz. ## DO-201 axial package — legacy through-hole fit The leads are tin-plated copper; the body is molded epoxy. Mounting requires a drilled PCB hole or terminal block — no surface-mount reflow. The axial lead bend radius must be kept above 2 mm to avoid cracking the glass passivation on the die. Expect no factory lead time; the stock is what the open market holds.","metaTitle":"1.5KE33CARL Zener TVS Diode, 1500W, Bidirectional, DO-201","metaDescription":"1.5KE33CARL is a bidirectional Zener TVS diode from STMicroelectronics, 1500W peak pulse power, 28.2V standoff, 31.4V breakdown, 59V 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); Cut Tape (CT)","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","Bidirectional Channels":"1","Capacitance @ Frequency":"1350pF @ 1MHz","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"31.4V","Voltage - Clamping (Max) @ Ipp":"59V","Voltage - Reverse Standoff (Typ)":"28.2V","Current - Peak Pulse (10/1000µs)":"169A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/572f99690aeb2b0f302ed9cdcfd976ec.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE33CARL/alternatives.json"},"ai":{"faq":[{"question":"Is the 1.5KE33CARL unidirectional or bidirectional?","answer":"It is bidirectional — a single device clamps both positive and negative transients symmetrically. This is confirmed by the single bidirectional channel designation."},{"question":"What package does the 1.5KE33CARL come in?","answer":"It comes in a DO-201AA (also known as DO-27) axial-lead through-hole package. The supplier device package is DO-201."},{"question":"Where can I buy the 1.5KE33CARL?","answer":"The 1.5KE33CARL is obsolete and not available through the factory channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/1.5KE33CARL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/1.5KE33CARL when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:55:49.139Z","lastPublished":"2026-07-16T15:55:49.139Z","indexable":true}}