{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE20C","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE20C","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE20C","factsUrl":"https://icboms.com/api/mcp/products/1.5KE20C","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE20C, bidirectional, 1500W peak pulse power, 17.1V reverse standoff, DO-201AA axial package.","salesMarkdown":"## Clamping performance and pulse handling The 1.5KE20C: This means a 24 V bus sees the clamp engage at roughly 29 V, leaving margin for normal ripple before the TVS conducts. Power line protection is not enabled (No per), meaning this device is intended for secondary-side signal or low-voltage rail clamping rather than mains AC input protection. ## Through-hole axial package for board-level retrofit Housed in a DO-201AA (DO-27) axial leaded package, the 1.5KE20C mounts through-hole. The axial leads suit point-to-point wiring or PCB layouts where the device is inserted and soldered — common in power supply input stages and telecom line cards. The supplier device package is DO-201, which is the same mechanical outline as the industry-standard DO-201AA. Lead spacing and body dimensions match the 1.5KE series footprint, so a replacement from the same family drops in without layout changes. ## Obsolete — sourcing through independent channels Littelfuse has marked the 1.5KE20C as obsolete. Because the 1.5KE series shares a common DO-201 footprint and similar electrical characteristics across voltage variants, a functionally equivalent TVS from the same family (e.g., a 1.5KE18CA or 1.5KE22CA) may serve as a drop-in replacement if the standoff voltage tolerance is acceptable — verify the breakdown and clamping voltages against the circuit's operating rail before substituting.","metaTitle":"1.5KE20C Littelfuse TVS Diode, 1500W, 17.1V Standoff","metaDescription":"Littelfuse 1.5KE20C Zener TVS diode, 1500W peak pulse power, 17.1V reverse standoff, bidirectional, DO-201 package. Obsolete — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5KE","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"18V","Voltage - Clamping (Max) @ Ipp":"29.09V","Voltage - Reverse Standoff (Typ)":"17.1V","Current - Peak Pulse (10/1000µs)":"54.9A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE20C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE20C 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}}