{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BYW51-200","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"BYW51-200","canonicalUrl":"https://icboms.com/stmicroelectronics/BYW51-200","factsUrl":"https://icboms.com/api/mcp/products/BYW51-200","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics BYW51-200, Fast Recovery =< 500ns, > 200mA (Io), 200 V, 10 A per diode, 35 ns trr, 1 Pair Common Cathode, TO-220-3, Through Hole.","salesMarkdown":"## Common-cathode fast recovery pair in TO-220-3 The 850 mV forward voltage drop at 8 A keeps conduction losses manageable, while the 150°C maximum junction temperature allows operation in thermally constrained environments such as enclosed power supplies and motor drives. A 35 ns reverse recovery time places this diode in the fast-recovery class, suitable for switching frequencies up to several hundred kilohertz. In a continuous-conduction-mode boost or flyback converter, the trr directly sets the reverse-recovery charge that the MOSFET must absorb at turn-on; a 35 ns trr keeps that charge low enough to avoid excessive ringing or thermal stress in the active switch. The common-cathode pair lets you wire two diodes with a shared cathode connection, reducing PCB trace inductance in a centre-tapped secondary winding layout. No last-time-buy window remains open through the original manufacturer. Sourcing is limited to verified surplus and broker-channel inventory.","metaTitle":"STMicroelectronics BYW51-200 Fast Recovery Diode, 200 V","metaDescription":"STMicroelectronics BYW51-200 fast recovery rectifier, 200 V, 10 A per diode, 35 ns trr, common cathode pair in TO-220-3.","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-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"BYW51","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220","Reverse Recovery Time (trr)":"35 ns","Current - Reverse Leakage @ Vr":"15 µA @ 200 V","Voltage - DC Reverse (Vr) (Max)":"200 V","Operating Temperature - Junction":"150°C (Max)","Voltage - Forward (Vf) (Max) @ If":"850 mV @ 8 A","Current - Average Rectified (Io) (per Diode)":"10A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/922acfeb05a612ca176d4ed85108d55b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BYW51-200/alternatives.json"},"ai":{"faq":[{"question":"Is BYW51-200 obsolete?","answer":"Yes, the BYW51-200 carries an Obsolete lifecycle status. Supply is limited to surplus and broker-channel inventory."},{"question":"What is the reverse recovery time of BYW51-200?","answer":"The reverse recovery time (trr) is 35 ns, measured under standard test conditions. This fast recovery characteristic suits it for high-frequency rectification and snubber circuits."},{"question":"What is the equivalent of BYW51-200?","answer":"No pin-compatible equivalent is listed in the manufacturer's cross-reference. For a same-function fast-recovery common-cathode pair in TO-220-3, evaluate parts with similar 200 V / 10 A ratings and a trr of 35 ns or faster. Confirm the pinout and footprint against your PCB layout before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/BYW51-200","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/BYW51-200 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}}