{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N645UR-1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N645UR-1","canonicalUrl":"https://icboms.com/microchip/1N645UR-1","factsUrl":"https://icboms.com/api/mcp/products/1N645UR-1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N645UR-1 standard recovery diode, 225 V reverse voltage, 400 mA average rectified current, DO-213AA surface mount package, bulk.","salesMarkdown":"## Recovery speed and what it means for the circuit The 1N645UR-1 is a standard recovery diode with a recovery time greater than 500 ns at forward currents above 200 mA. This places it in the slow-switching class — the reverse recovery transient lasts long enough to cause shoot-through losses in a 100 kHz+ switching supply, so it belongs in line-frequency rectification, snubber, or DC bus isolation stages where the recovery tail does not limit efficiency. ## 225 V reverse standoff and 400 mA forward rating Rated 225 V DC reverse maximum and 400 mA average rectified forward current. Reverse leakage is 50 nA at the 225 V rating, which keeps the off-state power loss below 12 µW in a high-impedance bias circuit. Junction operating range is -65 °C to +175 °C — the full military temperature band. The DO-213AA (MELF-style) surface mount package has no leads to fatigue under thermal cycling, which suits the -55 °C cold-soak to +125 °C hot-run profile in avionics or downhole instrumentation. The package is rated for standard reflow profiles; the metallized end caps handle the solder joint, not the glass body.","metaTitle":"Microchip 1N645UR-1 Standard Recovery Diode, 225V, 400mA","metaDescription":"Microchip 1N645UR-1 standard recovery diode, 225V VR, 400mA IO, DO-213AA surface mount. Active production, sourced to order. Request a quote.","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":"Bulk","Diode Type":"Standard","Mounting Type":"Surface Mount","Package / Case":"DO-213AA","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/82c3bfcb93c8274b7dba64e4a46e13fc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N645UR-1/alternatives.json"},"ai":{"faq":[{"question":"What is the recovery speed of the 1N645UR-1?","answer":"It is a standard recovery diode with a recovery time greater than 500 ns at forward currents above 200 mA. This makes it unsuitable for high-frequency switching applications above roughly 50 kHz, but it works well for 50/60 Hz line rectification, DC bus isolation, and snubber circuits where the reverse recovery tail does not cause excessive loss."},{"question":"What package does the 1N645UR-1 come in?","answer":"The 1N645UR-1 is supplied in a DO-213AA surface mount package (MELF style) and is packaged in bulk. The metallized end caps form the anode and cathode connections — no wire bonds or lead frames inside, which improves reliability under thermal cycling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N645UR-1","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 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}}