{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N645UR-1/TR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N645UR-1-TR","canonicalUrl":"https://icboms.com/microchip/1N645UR-1-TR","factsUrl":"https://icboms.com/api/mcp/products/1N645UR-1%2FTR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N645UR-1/TR standard recovery rectifier diode, 225 V reverse voltage, 400 mA forward current, 1 V forward voltage, DO-213AA surface mount package, Tape & Reel.","salesMarkdown":"## Rectifier ratings and the circuit-fit decision The 1N645UR-1/TR is a standard recovery silicon rectifier rated for 225 V reverse voltage (Vr) and 400 mA average rectified forward current (Io). The 1 V forward drop at 400 mA is the conduction loss floor at rated current — at lower forward currents the Vf drops, but the 1 V figure is the one to budget for worst-case thermal rise in a 400 mA rail. The standard recovery speed (>500 ns, >200 mA Io) places this diode in line-frequency rectification duty — 50/60 Hz mains, DC bus precharge, or freewheeling in low-speed inductive loads. At switching frequencies above a few kilohertz the reverse recovery time dominates the switching loss; a fast-recovery or Schottky part would be the better fit there. Reverse leakage is specified at 50 nA maximum at 225 V — a low leakage figure that matters for high-impedance divider networks, sample-and-hold front-ends, or battery-powered circuits where the diode's own draw must stay below the microamp range. ## Package and reflow integration Housed in the DO-213AA (SOD-80) surface-mount package, the 1N645UR-1/TR mates with the standard SOD-80 footprint — a two-pad layout with the cathode band marking the polarity. The metal end-cap construction handles standard reflow profiles; the junction operates from -65°C to 175°C, covering military-temperature-range requirements for avionics, downhole instrumentation, or outdoor telecom enclosures. Supplied on Tape & Reel (TR), this is the production-friendly format for pick-and-place assembly. The reel quantity is the standard DO-213AA carrier tape pitch — confirm the feeder setup for the SOD-80 body length before the line runs. It remains a current-production part suitable for both new designs and ongoing BOM replenishment.","metaTitle":"Microchip 1N645UR-1/TR Standard Recovery Diode","metaDescription":"Microchip Technology 1N645UR-1/TR standard recovery rectifier, 225V Vr, 400mA Io, 1V Vf. DO-213AA surface mount. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Speed":"Standard Recovery >500ns, > 200mA (Io)","Series":"-","Package":"Tape & Reel (TR)","Diode Type":"Standard","Mounting Type":"Surface Mount","Package / Case":"DO-213AA","Product Status":"Active","lifecycle_stage":"eol_hot","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-213AA","Current - Reverse Leakage @ Vr":"50 nA @ 225 V","Voltage - DC Reverse (Vr) (Max)":"225 V","Current - Average Rectified (Io)":"400mA","Operating Temperature - Junction":"-65°C~175°C","Voltage - Forward (Vf) (Max) @ If":"1 V @ 400 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/82c3bfcb93c8274b7dba64e4a46e13fc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N645UR-1%2FTR/alternatives.json"},"ai":{"faq":[{"question":"What is the 1N645UR-1/TR's switching speed?","answer":"It is a standard recovery diode with a recovery time greater than 500 ns at forward currents above 200 mA. This makes it suitable for line-frequency rectification (50/60 Hz) and low-speed freewheeling, but not for high-frequency switching converters."},{"question":"What package does the 1N645UR-1/TR come in?","answer":"The DO-213AA (SOD-80) surface-mount package, supplied on Tape & Reel for automated assembly. The junction temperature range is -65°C to 175°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N645UR-1-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N645UR-1-TR 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}}