{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE22","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE22","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE22","factsUrl":"https://icboms.com/api/mcp/products/1.5KE22","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE Series Zener TVS Diode, 1.5KE22, 1500W Peak Pulse Power, 18.8V Reverse Standoff, 32.13V Clamping, Unidirectional, DO-201AA Axial Package, Tape & Reel.","salesMarkdown":"## 1500 W peak pulse — the protection envelope The 1.5KE22: The corresponding peak pulse current is 49.7 A at the same 10/1000 µs condition, which sets the maximum surge current the diode can clamp without failing. The reverse standoff voltage is 18.8 V, meaning the diode draws negligible leakage below that rail voltage and only starts conducting significantly above the minimum breakdown of 19.8 V. ## Unidirectional Zener — polarity matters This is a unidirectional Zener TVS (single channel), so it protects one polarity rail — the cathode is tied to the positive line, anode to ground. It will not clamp bidirectional transients; for AC or bipolar lines you would need a bidirectional part from the same 1.5KE series. ## Sourcing posture for the 1.5KE22 Because this part is obsolete, it is not stocked in volume by the manufacturer. We source it through independent surplus and broker channels — each lot is verified for authenticity and RoHS compliance before shipment. Pricing and availability are confirmed at quote time against your BOM quantity. No official cross-reference or pin-compatible second source is listed by Littelfuse. If you need a drop-in replacement, a parametric search on the 1.5KE series for a similar standoff voltage and same package is the starting point — but a full electrical comparison of the clamping and breakdown specs is required before substituting.","metaTitle":"Littelfuse 1.5KE22 TVS Diode, 1500W, 18.8V Standoff, DO-201","metaDescription":"Littelfuse 1.5KE22 unidirectional Zener TVS diode, 1500W peak pulse power, 18.8V reverse standoff, 32.13V clamping. Obsolete — sourced to order via 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":"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","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"19.8V","Voltage - Clamping (Max) @ Ipp":"32.13V","Voltage - Reverse Standoff (Typ)":"18.8V","Current - Peak Pulse (10/1000µs)":"49.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6835","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the peak pulse power rating of the 1.5KE22?","answer":"The clamping voltage at that current is 32.13 V maximum."},{"question":"What package does the 1.5KE22 come in?","answer":"DO-201AA (DO-27) axial-lead through-hole package, supplied in Tape & Reel. The operating junction temperature range is -55°C to +175°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE22","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE22 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}}