{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE250","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE250","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE250","factsUrl":"https://icboms.com/api/mcp/products/1.5KE250","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series Zener TVS diode, 1.5KE250, 1500W peak pulse power, 361.2V clamping, DO-201AA/DO-27 axial, through hole.","salesMarkdown":"## 1500W peak pulse, 361.2V clamp — the protection ceiling The 1.5KE250: The reverse standoff voltage is 214V typical, meaning the device does not conduct appreciably below this DC voltage. Breakdown occurs at a minimum of 225V, ensuring the TVS remains transparent during normal operation and only clamps when the transient exceeds the standoff threshold. ## Obsolete — sourcing through independent channels Littelfuse has marked the 1.5KE250 as obsolete. The operating junction temperature range spans -55°C to 175°C. This covers industrial and many automotive under-hood environments; the 175°C upper limit provides margin above the 150°C typical for many TVS diodes, suiting applications where ambient temperatures are elevated, such as motor drive cabinets or power supply outputs. The single unidirectional channel means the device protects one polarity rail. For bidirectional or AC-line protection, two devices in anti-series or a dedicated bidirectional TVS would be needed.","metaTitle":"Littelfuse 1.5KE250 TVS Diode, 1500W, 361.2V Clamp","metaDescription":"Littelfuse 1.5KE250 Zener TVS diode, 1500W peak pulse power, 361.2V clamping, DO-201. Obsolete — sourced to order. Request quote.","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)":"225V","Voltage - Clamping (Max) @ Ipp":"361.2V","Voltage - Reverse Standoff (Typ)":"214V","Current - Peak Pulse (10/1000µs)":"4.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3617","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1ea870152ad203d90f672f2af1c1ed0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5KE250 come in?","answer":"The 1.5KE250 is supplied in a DO-201AA, DO-27, or axial through-hole package. The supplier device package is DO-201. It is available in Tape & Reel (TR) packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE250","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE250 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}}