{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE30-B","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE30-B","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE30-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE30-B","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE30-B, 1500W peak pulse power, 25.6V reverse standoff, 43.47V clamping, DO-201AA axial, unidirectional.","salesMarkdown":"## Obsolete — sourcing reality for the 1.5KE30-B The 25.6 V reverse standoff voltage means it starts clamping above that rail level, protecting downstream silicon from transients up to 43.47 V. ## What the ratings mean for your protection design The 25.6 V reverse standoff (working voltage) is the DC rail the diode sits across without conducting — a 24 V nominal bus with tolerance up to 25.6 V is the right fit. Above that, breakdown starts at 27 V minimum, and clamping at 43.47 V limits the spike seen by the load. The 1500 W rating is the product of clamping voltage and peak current at that pulse shape; real-world energy depends on the actual transient duration. The DO-201 axial package is through-hole — easy to hand-rework or replace on a board, though the leads need a clean solder joint to handle the pulse current without lifting a pad. Supplied in DO-201AA (DO-27) axial leaded package, through-hole mount. The body is bulk-packed, not tape-and-reel. Polarity is marked by the cathode band — the unidirectional channel clamps only one polarity, so orientation matters on the board.","metaTitle":"1.5KE30-B Littelfuse TVS Diode, 1500W, 25.6V Standoff","metaDescription":"Littelfuse 1.5KE30-B Zener TVS diode, 1500W peak pulse power, 25.6V reverse standoff, DO-201. 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)":"27V","Voltage - Clamping (Max) @ Ipp":"43.47V","Voltage - Reverse Standoff (Typ)":"25.6V","Current - Peak Pulse (10/1000µs)":"36.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/149eca2cbf10498ecc0c7eab912fe9f4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1.5KE30-B?","answer":"The 1.5KE30-B is obsolete from Littelfuse. We source it through independent surplus and broker channels — quoted to order against your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE30-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/1.5KE30-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}}