{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N6663US","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N6663US","canonicalUrl":"https://icboms.com/microchip/1N6663US","factsUrl":"https://icboms.com/api/mcp/products/1N6663US","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N6663US standard fast recovery diode, 600 V reverse voltage, 500 mA average rectified current, SQ-MELF D-5A package, surface mount.","salesMarkdown":"## 600 V fast recovery in a hermetic-grade surface-mount package The 1N6663US is a standard fast recovery diode rated for 600 V DC reverse voltage and 500 mA average rectified current, with a maximum forward voltage of 1 V at 400 mA. Its recovery time is specified as ≤ 500 ns at forward currents above 200 mA, making it suitable for snubber, freewheeling, and clamp circuits where switching losses matter. The SQ-MELF (D-5A) package is a surface-mount ceramic body with metallized ends, offering a hermetic-like seal and excellent thermal cycling performance compared to plastic SMD packages. ## Leakage and temperature margin for the test bench Reverse leakage is specified at 50 nA maximum at 600 V — a tight figure that holds across the full -65°C to +175°C junction temperature range. For a calibration or verification engineer, this means the diode's blocking behavior is predictable well beyond the typical 125°C limit of commercial rectifiers, and the leakage won't drift enough to upset a high-impedance bias network over temperature. The 1 V forward drop at 400 mA is a typical figure; the actual drop at 500 mA will be slightly higher but still within the 1.1–1.2 V range for a 600 V fast recovery device. If you are characterizing this part on a curve tracer, sweep it to the full 500 mA rated current and note the Vf at your operating point — the datasheet's typical curve is the reference, not the limit. No stock-holding claim or lead-time number is published here — confirm the quantity and delivery window with your sourcing desk.","metaTitle":"Microchip 1N6663US Fast Recovery Diode, 600V 500mA SQ-MELF","metaDescription":"Microchip 1N6663US standard fast recovery diode, 600V 500mA in SQ-MELF D-5A package. Active production, sourced to order. Low leakage 50nA at 600V.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Bulk","Diode Type":"Standard","Mounting Type":"Surface Mount","Package / Case":"SQ-MELF, A","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N6663","Capacitance @ Vr, F":"-","Supplier Device Package":"D-5A","Current - Reverse Leakage @ Vr":"50 nA @ 600 V","Voltage - DC Reverse (Vr) (Max)":"600 V","Current - Average Rectified (Io)":"500mA","Operating Temperature - Junction":"-65°C~175°C","Voltage - Forward (Vf) (Max) @ If":"1 V @ 400 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$20.7400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c77d7bf93cfea9a863532e2366dbdc2d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N6663US/alternatives.json"},"ai":{"faq":[{"question":"What is the recovery speed of the 1N6663US?","answer":"The 1N6663US is a fast recovery diode with a recovery time ≤ 500 ns at forward currents above 200 mA. This places it in the standard fast recovery class for 600 V rectifiers."},{"question":"What package does the 1N6663US use?","answer":"The 1N6663US comes in a SQ-MELF (D-5A) surface-mount package. This is a ceramic, metallized-end package with a cylindrical body, offering hermetic-like reliability for demanding environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N6663US","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N6663US 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}}