{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE300C-B","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE300C-B","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE300C-B","factsUrl":"https://icboms.com/api/mcp/products/1.5KE300C-B","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE Series bidirectional Zener TVS diode, 1.5KE300C-B, 1500W peak pulse power, 256V reverse standoff, DO-201AA axial-lead package.","salesMarkdown":"## 1.5kW bidirectional Zener — what the ratings mean for the BOM The 1.5KE300C-B: The 256V reverse standoff voltage is the maximum DC or AC peak voltage the protected line can carry without the diode conducting — above that, the device clamps transients at 434.7V maximum while shunting 3.7A peak pulse current. The DO-201AA axial-lead package is a through-hole form factor that suits point-to-point wiring or PCB mounting with a 0.100-inch lead spacing — the same footprint as standard 1N62xx and 1.5KE series parts. ## Where it fits in the circuit Classified under Circuit Protection, this TVS is designed for general-purpose transient suppression on DC power rails, signal lines, or low-frequency AC lines where the steady-state voltage stays below 256V. The 1500W peak pulse rating at 10/1000µs means it can absorb a single high-energy surge, but repetitive pulsing must be evaluated against the junction temperature rise.","metaTitle":"Littelfuse 1.5KE300C-B TVS Diode, 1.5kW, 256V Standoff","metaDescription":"Littelfuse 1.5KE300C-B bidirectional Zener TVS, 1500W peak pulse, 256V 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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"270V","Voltage - Clamping (Max) @ Ipp":"434.7V","Voltage - Reverse Standoff (Typ)":"256V","Current - Peak Pulse (10/1000µs)":"3.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/149eca2cbf10498ecc0c7eab912fe9f4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5KE300C-B?","answer":"The 1.5KE series includes many voltage variants in the same DO-201 package — a functionally similar part would need to match the 256V reverse standoff and bidirectional configuration. Confirm the replacement against the original BOM voltage and power requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE300C-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/1.5KE300C-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}}