{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"P6KE91A-T","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"P6KE91A-T","canonicalUrl":"https://icboms.com/diodes-inc/P6KE91A-T","factsUrl":"https://icboms.com/api/mcp/products/P6KE91A-T","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated P6KE91A-T, Zener TVS diode, 600W peak pulse power, 77.8V reverse standoff, 125V clamping, unidirectional, DO-204AC (DO-15) axial, Tape & Reel.","salesMarkdown":"## What the 600W peak pulse rating means for board-level protection The P6KE91A-T: The 77.8V reverse standoff voltage means it sits across a nominal 75V or 80V bus without conducting in normal operation; the 86.5V minimum breakdown voltage is the point where avalanche conduction starts. When a surge hits, the device clamps at 125V maximum while shunting 4.8A of peak pulse current (10/1000µs waveform). That 125V ceiling is what the downstream circuitry must survive — if the protected rail's absolute maximum rating is below 125V, this part alone won't protect it. ## Obsolete — sourcing through independent channels Diodes Incorporated lists the P6KE91A-T as obsolete. For existing BOM lines that specify this exact part number, supply runs through independent distribution — surplus and new-old-stock inventory held by brokers and secondary-market suppliers. ## DO-15 axial package and temperature range The device comes in a through-hole DO-204AC (DO-15) axial-lead package, supplier device package DO-15. Tape-and-reel packaging suits automated insertion for through-hole assembly lines.","metaTitle":"Diodes Inc P6KE91A-T TVS Diode, 600W, 77.8V Standoff, DO-15","metaDescription":"P6KE91A-T from Diodes Inc is a 600W unidirectional TVS diode with 77.8V standoff, 86.5V breakdown, and 125V clamp.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diodes Incorporated","Type":"Zener","Series":"-","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-204AC, DO-15, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"P6KE91","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-15","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"86.5V","Voltage - Clamping (Max) @ Ipp":"125V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"4.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3461","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8069264fd616209624e252e56a5326bb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest alternative to P6KE91A-T?","answer":"No official pin-compatible successor is listed by Diodes Incorporated for the P6KE91A-T. A functionally similar TVS with the same 77.8V standoff and 600W rating from another manufacturer would require a BOM review — package, clamp voltage, and surge capability must match the application's transient profile."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/P6KE91A-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/P6KE91A-T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-19T21:36:22.841Z","lastPublished":"2026-07-19T21:36:22.841Z","indexable":true}}