{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE51CA","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE51CA","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE51CA","factsUrl":"https://icboms.com/api/mcp/products/1.5KE51CA","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5KE series, bidirectional Zener TVS diode, order code 1.5KE51CA, 1500W peak pulse power, 43.6V standoff voltage, 48.5V breakdown, 70.1V clamp, DO-201AA axial through-hole package.","salesMarkdown":"## 43.6 V standoff, 70.1 V clamp — the protection window for a 48 V bus The 1.5KE51CA: Its 43.6 V reverse standoff voltage sits just below the nominal 48 V rail, so it does not conduct during normal operation. That clamping ceiling is the voltage the downstream circuitry must survive. No power line protection feature is built in (the part is a standalone transient suppressor, not a filtered protector). ## 175 °C junction rating — fits underhood and industrial high-temp slots The -55 °C to 175 °C operating junction temperature range covers the full automotive underhood profile (AEC-Q101 qualified parts in this family share the same die capability) and industrial enclosures near motors or furnaces. Packaged in a DO-201AA / DO-27 axial-lead through-hole body (supplier device package DO-201). The axial leads suit point-to-point wiring in power supplies, motor drives, and industrial controllers where board space is not the constraint. Available in Tape & Reel for automated insertion or Cut Tape for prototype builds. ## Active production — no lifecycle risk for new designs Sourced through independent distribution channels.","metaTitle":"Littelfuse 1.5KE51CA TVS Diode, 1500W, 43.6V Standoff","metaDescription":"Littelfuse 1.5KE51CA bidirectional Zener TVS diode, 1500W peak pulse power, 43.6V standoff, 70.1V clamp. Active, through-hole DO-201. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5KE","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Active","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)":"48.5V","Voltage - Clamping (Max) @ Ipp":"70.1V","Voltage - Reverse Standoff (Typ)":"43.6V","Current - Peak Pulse (10/1000µs)":"21.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE51CA come in?","answer":"It is supplied in a DO-201AA / DO-27 axial-lead through-hole package (supplier device package DO-201). Tape & Reel and Cut Tape options are available."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE51CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE51CA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}