{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"P6KE91CA-B","brand":"Diodes Incorporated","brandSlug":"diodes-inc","productSlug":"P6KE91CA-B","canonicalUrl":"https://icboms.com/diodes-inc/P6KE91CA-B","factsUrl":"https://icboms.com/api/mcp/products/P6KE91CA-B","rawCanonicalId":null},"summary":{"shortDescription":"Diodes Incorporated P6KE91CA-B TVS Zener diode, bidirectional, 600W peak pulse power, 77.8V reverse standoff, 86.5V breakdown, 125V clamping, DO-204AC/DO-15 axial, bulk.","salesMarkdown":"## 600W bidirectional TVS for 77.8V rail protection The P6KE91CA-B: The bidirectional configuration means a single device protects both polarities — useful on AC signal lines or DC rails where the transient can swing either way. The 77.8V reverse standoff rating is the maximum continuous DC voltage the diode can sit across without conducting — stay at or below this for normal operation. ## DO-15 axial package — rework and board-fit The bulk packaging means parts come loose in a bag, not taped and reeled — fine for bench stock or low-volume assembly, but a pick-and-place machine will need a tube or tray feeder. The DO-15 body is polarity-marked with a cathode band; for the bidirectional variant the marking is still present but the device works either way. The 175°C TJ max is typical for silicon Zener TVS — the junction can spike during a pulse and recover without damage as long as the average power stays within the 600W peak limit. No power line protection (the part does not include a built-in filter or series element), so it is a straight shunt clamp — use it across the rail to ground, not in series with the power path. ## Sourcing and lifecycle status The base product number P6KE91 covers the whole family; the CA suffix specifies bidirectional, and the -B suffix indicates bulk packaging.","metaTitle":"Diodes Inc P6KE91CA-B TVS Diode, 600W, 77.8V Standoff","metaDescription":"Diodes Incorporated P6KE91CA-B bidirectional TVS diode, 600W peak pulse power, 77.8V reverse standoff, DO-15 axial package. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diodes Incorporated","Type":"Zener","Series":"-","Package":"Bulk","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-204AC, DO-15, Axial","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"P6KE91","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-15","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":"$0.4500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8069264fd616209624e252e56a5326bb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does P6KE91CA-B come in?","answer":"It is supplied in a DO-204AC (DO-15) axial-lead through-hole package, in bulk (loose) packaging. The body is approximately 7.6 mm long with 0.032-inch diameter leads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diodes-inc/P6KE91CA-B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diodes-inc/P6KE91CA-B 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}}