{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE220-B","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE220-B","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE220-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE220-B","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE220-B, 1500W peak pulse power, 185V reverse standoff, 344.4V clamping, DO-201AA/DO-27 axial, through hole, bulk.","salesMarkdown":"## What the ratings mean for circuit protection The 1.5KE220-B: The 185 V reverse standoff voltage means the device does not conduct at normal line voltage up to that level; it only clamps when a transient exceeds it. The 1500 W rating tells you the energy-handling capacity: a higher-energy surge than the diode can absorb will destroy it, so the TVS must be sized for the expected transient energy on the line. Through-hole axial package, DO-201AA / DO-27 form factor, supplier device package DO-201. The axial leads suit point-to-point wiring or PCB through-hole mounting; the body is large enough to hand-solder without magnification. Supplied in bulk — no tape-and-reel, so it is a manual-placement part. Not a showstopper for a service stock or a low-volume build, but a pick-and-place line would need a tube or tray feeder.","metaTitle":"Littelfuse 1.5KE220-B Zener TVS, 1500W, DO-201","metaDescription":"Littelfuse 1.5KE220-B Zener TVS diode, 1500W peak pulse, 185V standoff, DO-201 axial. Obsolete — sourced to order against RFQ.","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":"Bulk","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","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"198V","Voltage - Clamping (Max) @ Ipp":"344.4V","Voltage - Reverse Standoff (Typ)":"185V","Current - Peak Pulse (10/1000µs)":"4.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5KE220-B in the same family?","answer":"The 1.5KE series includes many voltage variants in the same DO-201 package, but a direct replacement requires matching the standoff voltage, breakdown, and clamping specs to your circuit's protection threshold."},{"question":"What compliance documentation does Littelfuse provide for the 1.5KE220-B?","answer":"The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC) for this order code. Standard Littelfuse TVS diodes in the 1.5KE series are typically RoHS compliant, but verify the specific date-code lot at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE220-B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE220-B 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}}