{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N645-1/TR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N645-1-TR","canonicalUrl":"https://icboms.com/microchip/1N645-1-TR","factsUrl":"https://icboms.com/api/mcp/products/1N645-1%2FTR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N645-1/TR standard recovery rectifier diode, 400 mA average rectified current, 225 V DC reverse voltage, 1 V forward drop at rated current, DO-213AA MELF package, Tape & Reel.","salesMarkdown":"## DO-213AA MELF — board-fit and reflow considerations The 1N645-1/TR ships in a DO-213AA MELF (Metal Electrode Leadless Face) package — a cylindrical body with metallized end caps that replace traditional leads. The MELF footprint demands a well-defined solder-paste stencil aperture: too little paste and the end-cap wets unevenly, too much and the part tombstone during reflow. Pad geometry follows the package outline; the recommended land pattern is available in the Microchip application note for MELF devices. Tape & Reel packaging means the diode feeds directly into a pick-and-place machine — no tube changeover or tray handling. The hermetic glass-body MELF construction has no moisture sensitivity level (MSL) concern, so no bake-out is required before reflow even after extended storage. ## 400 mA, 225 V — what the rectifier ratings mean for your rail Rated 400 mA average rectified current (Io) at 225 V DC reverse voltage (Vr). The 1 V forward drop at 400 mA sets the conduction loss at 400 mW — well within the DO-213AA's thermal budget at 25°C ambient, but derating is needed above 100°C junction. The 50 nA max reverse leakage at 225 V is low for a 225 V part, making this diode suitable for high-impedance bias networks and low-power standby rails where leakage current would otherwise drain the reservoir capacitor. Use it for 50/60 Hz line rectification, DC blocking, polarity protection, and snubbing where recovery speed is not a constraint. ## Active lifecycle — sourcing posture The Tape & Reel quantity is the standard production reel; no minimum-order-surplus risk on this line.","metaTitle":"1N645-1/TR Microchip Standard Recovery Diode, 400 mA, 225 V","metaDescription":"Microchip 1N645-1/TR standard recovery rectifier: 400 mA average, 225 V reverse, 1 V forward drop. DO-213AA MELF package. 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","Base Product Number":"1N645","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":"$1.1400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fe08e14592a0012d20e37c97b7536c96.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N645-1%2FTR/alternatives.json"},"ai":{"faq":[{"question":"What is the 1N645-1/TR's recovery speed and why does it matter?","answer":"The 1N645-1/TR is a standard recovery diode with a reverse recovery time greater than 500 ns at 200 mA. This means it is not suited for fast-switching applications like high-frequency DC-DC converters or PFC stages — the stored charge in the junction takes too long to clear, causing excess switching loss and ringing. Use it for line-frequency rectification (50/60 Hz), DC blocking, polarity protection, and snubber networks where recovery speed is not critical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N645-1-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N645-1-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}}