1. Current Capability (Critical Parameter) - SBR20U60CTFP-G: 20A (per device); DSB20C60PN: 10A (per device). - If the original design operates near 20A, direct replacement poses an overload risk. Substitution is only suitable where the current demand is ≤10A with sufficient margin. 2. Technology Type and Reverse Leakage Current - The SBR utilizes "Super Barrier Rectifier" technology, with a typical reverse leakage of 500µA. The IXYS Schottky diode exhibits leakage up to 6mA under the same voltage conditions. - The Schottky diode's losses increase significantly under high temperature or high reverse voltage, potentially impacting system efficiency and temperature rise, especially in high ambient temperature applications. 3. Recovery Characteristics and Frequency Suitability - The SBR is specified as "Standard Recovery" (>500ns), while the DSB20C60PN is a "Fast Recovery" type (≤500ns). - The Schottky diode offers slightly lower switching loss in higher frequency applications, but this advantage is partially offset by its higher leakage current. 4. Package Isolation and Thermal Design - The SBR is explicitly marked with "Isolated Tab"; the DSB20C60PN does not specify this feature. - If the original design relies on isolated mounting, the heatsink insulation requirements must be verified during substitution, potentially necessitating additional insulation measures. 5. Operating Junction Temperature Range - SBR: -65°C to 150°C; DSB20C60PN: -55°C to 175°C. - While the Schottky diode has a higher maximum temperature rating, its high leakage current necessitates re-evaluating reliability in high-temperature applications in conjunction with the thermal design.