{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE39A-T","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"1.5KE39A-T","canonicalUrl":"https://icboms.com/diodes-inc/1.5KE39A-T","factsUrl":"https://icboms.com/api/mcp/products/1.5KE39A-T","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated 1.5KE39A-T Zener TVS diode, 1500W peak pulse power, 53.9V clamping voltage, 33.3V reverse standoff, DO-201AA/DO-27 axial, through-hole, Tape & Reel.","salesMarkdown":"## 1500W Zener TVS — what the ratings mean for your protection design The 1.5KE39A-T: The 37.1V minimum breakdown voltage and 33.3V reverse standoff mean the diode starts conducting just above the normal rail voltage, so it stays out of the way during steady-state operation but reacts fast when a spike hits. ## Obsolete — sourcing this part today A cross-reference search against the 33.3V standoff and 1500W rating is the practical next step for a new design. ## Through-hole axial — field-swappable without a hot-air station The DO-201AA / DO-27 axial package is a through-hole part — leads poke through the board and get soldered on the opposite side. On a customer site, you can swap it with a standard soldering iron and solder sucker; no hot-air station or reflow profile needed. The body is clearly marked with the part number and polarity band, so orientation is obvious even under a magnifier. Tape & Reel packaging means it feeds into automated insertion machines for volume builds, but for field repairs the loose part in a kit works fine. The 1500W pulse rating is the headline number to match when selecting a drop-in replacement.","metaTitle":"1.5KE39A-T Diodes Zener TVS, 1500W, DO-201, Obsolete","metaDescription":"1.5KE39A-T Zener TVS diode, 1500W peak pulse, 53.9V clamp, DO-201 axial. Obsolete — sourced to order. Request quote for stock and lead time.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diodes Incorporated","Type":"Zener","Series":"-","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":"1.5KE39","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","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/b6b9d4121cb66208511919f4a66769e1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5KE39A-T?","answer":"No official successor is documented. A functional replacement should match the 33.3V reverse standoff, 1500W peak pulse power, and DO-201 axial package. Cross-reference against other TVS diodes with those parameters is recommended for new designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/1.5KE39A-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/1.5KE39A-T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-19T21:33:49.852Z","lastPublished":"2026-07-19T21:33:49.852Z","indexable":true}}