{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE43","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE43","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE43","factsUrl":"https://icboms.com/api/mcp/products/1.5KE43","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE43, 1500W peak pulse power, 36.8V reverse standoff, 62.27V clamping, DO-201AA axial through-hole.","salesMarkdown":"## Clamping voltage and surge current — the real protection envelope The 1.5KE43: For a 36.8 V rail, this provides roughly 1.7× headroom — enough to keep downstream 40 V-rated components within their avalanche margin. The 1500 W peak pulse rating is the product of clamping voltage and peak current at the test waveform. Derating applies at elevated ambient temperatures per the standard power-temperature curve for axial-leaded TVS diodes. ## Obsolete — sourcing through independent channels Littelfuse lists the 1.5KE43 as obsolete. For a BOM line that requires this specific clamping voltage and package, the 1.5KE43 remains available on a quoted-to-order basis.","metaTitle":"Littelfuse 1.5KE43 TVS Diode, 1500W, 36.8V Standoff","metaDescription":"Littelfuse 1.5KE43 Zener TVS diode, 1500W peak pulse, 36.8V standoff, DO-201. Obsolete — sourced to order. Request 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)":"38.75V","Voltage - Clamping (Max) @ Ipp":"62.27V","Voltage - Reverse Standoff (Typ)":"36.8V","Current - Peak Pulse (10/1000µs)":"25.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE43/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 1.5KE43 and check current pricing?","answer":"Submit an RFQ for current availability, pricing, and lot traceability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE43","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE43 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}}