1. Reverse Leakage Current (Key Electrical Difference) - MBR30H100CTG: 4.5 µA @ 100 V - V30100C-M3/4W: 500 µA @ 100 V - The Vishay device exhibits approximately 100 times higher leakage current, which may lead to increased static power dissipation. This is especially significant under high-temperature or high-voltage conditions. Designs sensitive to efficiency or targeting low power consumption should validate this parameter carefully. 2. Operating Temperature Range and Qualification - MBR30H100CTG: Maximum junction temperature (Tj) of 175°C; no automotive-grade qualification noted. - V30100C-M3/4W: Junction temperature (Tj) of 150°C; AEC-Q101 qualified. - The onsemi device offers greater theoretical thermal headroom, making it suitable for higher-temperature environments. The Vishay device meets automotive reliability requirements but has a lower temperature ceiling; thermal management must ensure compliance with derating guidelines. 3. Technology Platform and Series Positioning - MBR30H100CTG belongs to the SWITCHMODE™ series, optimized for switching power supply applications. - V30100C-M3/4W utilizes TMBS® (Trench MOS Barrier Schottky) technology, emphasizing low forward voltage drop and high-temperature stability. - TMBS technology can theoretically offer lower conduction losses, but a practical assessment must weigh this benefit against the trade-off in leakage current.