{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BYW81P-200","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"BYW81P-200","canonicalUrl":"https://icboms.com/stmicroelectronics/BYW81P-200","factsUrl":"https://icboms.com/api/mcp/products/BYW81P-200","rawCanonicalId":null},"summary":{"shortDescription":"BYW81P-200, Standard Fast Recovery Rectifier Diode, 200 V, 15 A, 40 ns trr, Through Hole, TO-220-2 / TO-220AC, Tube.","salesMarkdown":"The 40 ns trr makes it suitable for switching frequencies where a standard recovery diode would cause excessive losses or ringing, such as in 50-60 Hz rectification with a capacitive load or in flyback and forward converter output stages. The BYW81P-200 is listed as obsolete, meaning the manufacturer no longer produces it. Availability is intermittent and pricing is quoted per lot at the time of request. A design review to qualify a modern fast-recovery diode with similar ratings (200 V, 15 A, 40 ns trr or better, in TO-220AC) is the recommended path for new production. ## 40 ns reverse recovery — the switching-speed edge The 40 ns reverse recovery time is the headline switching parameter. It means the diode clears stored charge quickly when the voltage reverses, reducing turn-off losses and electromagnetic interference. For a 15 A part, this is a fast-recovery class, not an ultrafast or soft-recovery type. It works well in continuous-conduction-mode boost converters and as a freewheeling diode in low-to-medium frequency PWM motor drives where the switching frequency stays under a few tens of kilohertz. The 1.15 V forward voltage drop at 25 A is a typical figure for this speed class — expect slightly higher conduction loss than a slower 60 Hz rectifier, but the switching loss trade-off is worth it. ## Package and mounting — through-hole simplicity It is straightforward to hand-solder or wave-solder. The tab is electrically connected to the cathode (output), so the heatsink must be electrically isolated or the system must tolerate that connection.","metaTitle":"BYW81P-200 Fast Recovery Diode, 200V 15A TO-220AC","metaDescription":"BYW81P-200 fast recovery rectifier diode, 200V 15A, 40ns trr, TO-220AC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tube","Technology":"Standard","Mounting Type":"Through Hole","Package / Case":"TO-220-2","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"BYW81","Capacitance @ Vr, F":"-","Supplier Device Package":"TO-220AC","Reverse Recovery Time (trr)":"40 ns","Current - Reverse Leakage @ Vr":"20 µA @ 200 V","Voltage - DC Reverse (Vr) (Max)":"200 V","Current - Average Rectified (Io)":"15A","Operating Temperature - Junction":"-40°C ~ 150°C","Voltage - Forward (Vf) (Max) @ If":"1.15 V @ 25 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3400","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BYW81P-200/alternatives.json"},"ai":{"faq":[{"question":"What is the reverse recovery time of BYW81P-200?","answer":"The reverse recovery time (trr) is 40 ns."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/BYW81P-200","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/BYW81P-200 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}