{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE91C","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5KE91C","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5KE91C","factsUrl":"https://icboms.com/api/mcp/products/1.5KE91C","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5KE series TVS diode, Type Zener, Bidirectional, 1.5KE91C, 1500W peak pulse power, 77.8V reverse standoff, DO-201AA axial package, Tape & Reel.","salesMarkdown":"## 1500 W bidirectional transient suppressor The 1.5KE91C: The bidirectional configuration means a single device clamps both polarities, saving board space compared to back-to-back unidirectional diodes. ## DO-201 axial package and temperature range Housed in a DO-201AA (DO-27) axial-lead package, the 1.5KE91C is a through-hole part suited for point-to-point wiring or PCB mounting with lead bending. The junction operates from -55°C to 175°C, covering industrial and automotive under-hood ambient conditions without derating at the upper end. Power line protection is not supported — the device is intended for signal and low-power rail clamping, not for direct AC mains or high-energy surge paths that exceed the 1500 W rating. ## Obsolete — sourcing through independent channels Littelfuse has marked the 1.5KE91C as obsolete. This part is available through independent surplus and broker channels, with quantities and pricing confirmed at RFQ.","metaTitle":"Littelfuse 1.5KE91C TVS Diode, 1500W, 77.8V Standoff","metaDescription":"Littelfuse 1.5KE91C bidirectional TVS diode, 1500W peak pulse power, 77.8V standoff, DO-201 package. 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":"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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"81.9V","Voltage - Clamping (Max) @ Ipp":"131.25V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12.2A"}},"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 is the peak pulse power rating of the 1.5KE91C?","answer":"1500 W (1.5 kW) for a 10/1000 µs waveform. The clamping voltage at that power level is 131.25 V maximum at 12.2 A peak pulse current."},{"question":"What package does the 1.5KE91C come in?","answer":"DO-201AA (DO-27) axial-lead through-hole package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5KE91C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5KE91C 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}}