{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE20A-T","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"1.5KE20A-T","canonicalUrl":"https://icboms.com/diodes-inc/1.5KE20A-T","factsUrl":"https://icboms.com/api/mcp/products/1.5KE20A-T","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated 1.5KE20A-T Zener TVS diode, 1500W peak pulse power, 17.1V reverse standoff, 27.7V clamping, 54A peak pulse current, DO-201AA axial package, unidirectional.","salesMarkdown":"## 1500 W axial TVS for 12 V / 15 V rails The 1.5KE20A-T from Diodes Incorporated is a 1500 W unidirectional Zener TVS diode in the through-hole DO-201AA axial package. It is designed to clamp transients on DC power rails with a nominal operating voltage up to 17.1 V — that is the reverse standoff voltage, the highest steady-state voltage the part lets pass without conducting. When a surge hits, the breakdown triggers at a minimum of 19 V and the clamping voltage holds at 27.7 V while shunting 54 A of peak pulse current (10/1000 µs waveform). That 54 A rating is the current the part can sink during the surge event without failing — it is not a continuous rating. ## Where it fits on the board The DO-201AA axial body is a standard through-hole footprint — two leads, one banded cathode. It reworks cleanly under a hot-air station or soldering iron because the leads wick heat away from the junction; the junction itself is buried in the epoxy body, not on a pad that can lift. The part is not rated for power-line protection (the spec flags Power Line Protection as No) — it belongs on a DC bus, not an AC mains input. ## Sourcing an obsolete part Diodes Incorporated lists the 1.5KE20A-T as Obsolete. The part is sourced to order against a BOM line; current pricing and lead time are quoted at the time of request.","metaTitle":"1.5KE20A-T Diodes Zener TVS, 1500W, 17.1V Standoff, DO-201","metaDescription":"Obsolete 1500W unidirectional TVS diode. 17.1V standoff, 27.7V clamp at 54A. DO-201 axial package.","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); 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":"1.5KE20","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"19V","Voltage - Clamping (Max) @ Ipp":"27.7V","Voltage - Reverse Standoff (Typ)":"17.1V","Current - Peak Pulse (10/1000µs)":"54A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2400","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 1.5KE20A-T in this Circuit Protection family?","answer":"A functionally similar TVS with the same 1500 W rating and a close standoff voltage would require checking the 1.5KE series parametric table against your specific clamping and breakdown thresholds."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/1.5KE20A-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/1.5KE20A-T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-19T21:33:44.576Z","lastPublished":"2026-07-19T21:33:44.576Z","indexable":true}}