{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5KP11A","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"5KP11A","canonicalUrl":"https://icboms.com/littelfuse-inc/5KP11A","factsUrl":"https://icboms.com/api/mcp/products/5KP11A","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 5KP11A Zener TVS diode, 11V reverse standoff, 12.2V min breakdown, 18.2V max clamping @ 280.2A, 5kW peak pulse, P600 axial package, -55°C~175°C TJ.","salesMarkdown":"## 5 kW peak pulse — what the rating means The 5KP11A: The 5000 W peak pulse rating defines the clamping headroom available before the TVS enters conduction. At 280.2 A peak pulse current into a fault surge, the clamping voltage locks at 18.2 V maximum — this is the voltage the protected load sees during the event. A downstream bus rated for 15 V would be at risk; one rated 24 V nominal sees 18.2 V as a manageable transitory spike, not a sustained overstress. The 5 kW figure is a 10/1000 µs surge shape per the standard IEC 61000-4-5 test waveform — it does not scale linearly to longer-duration or higher-energy events, so the clamping characteristic at the specific threat profile matters more than the headline wattage. ## Voltage window — standoff, breakdown, and clamping The minimum breakdown of 12.2 V marks where conduction begins; the clamping ceiling of 18.2 V is where the device clamps the surge at peak current. That 6 V window between breakdown onset and full clamping is tight — the part transitions from off to protective conduction over a narrow band. For a 12 V rail, 11 V standoff leaves only 1 V of headroom before the device begins conducting at 12.2 V, so the ripple budget on the rail must stay well below that to avoid premature triggering. ## P600 axial and thermal margin The P600 axial package is the through-hole form factor for this power class — the lead length and copper pad area on the PCB set the thermal impedance from junction to ambient. For a long or repetitive surge, the device must reset thermally between events or the clamping ceiling creeps upward. The part is listed for general-purpose use — not automotive-qualified, so a safety-critical under-hood deployment would require separate qualification beyond the standard datasheet.","metaTitle":"Littelfuse 5KP11A TVS Diode, 5kW Peak, 18.2V Clamping","metaDescription":"Littelfuse 5KP11A unidirectional TVS diode, 11V standoff, 18.2V clamping, 5kW peak pulse, P600 axial. Active — quoted 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":"5KP","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"P600, Axial","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"5000W (5kW)","Base Product Number":"5KP1","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"P600","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"12.2V","Voltage - Clamping (Max) @ Ipp":"18.2V","Voltage - Reverse Standoff (Typ)":"11V","Current - Peak Pulse (10/1000µs)":"280.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.7600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9a3254fce889105c1fc5d20fb44bb051.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What voltage does the 5KP11A clamp at during a surge?","answer":"The maximum clamping voltage is 18.2 V at a peak pulse current of 280.2 A (10/1000 µs waveform). This is the voltage the protected circuit sees during the fault event — the standoff (working) voltage is 11 V, and conduction begins at 12.2 V minimum breakdown."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/5KP11A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/5KP11A 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}}