1. Current Rating: The SK310SMB has a rated average rectified current of 3 A, while the VSSB310 is rated for only 1.9 A. In applications approaching 3 A, the VSSB310 may overheat or exhibit reduced reliability, necessitating derating. 2. Forward Voltage Drop: The VSSB310 has a Vf of 700 mV at 3 A, notably lower than the SK310SMB’s 850 mV at 3 A. This indicates lower conduction loss and higher efficiency for the VSSB310; however, the test condition (3 A) exceeds its rated current, so overcurrent risk must be considered in actual use. 3. Junction Temperature Range: The SK310SMB supports operation down to –50 °C, whereas the VSSB310 is limited to –40 °C. In low‑temperature environments (e.g., industrial or automotive cold‑start), the VSSB310 may not be suitable. 4. Technology Characteristics: The VSSB310 employs TMBS® technology and provides a well‑specified junction capacitance (230 pF), making it suitable for high‑frequency switching applications. The SK310SMB does not specify capacitance, which may imply differences in frequency response or noise characteristics. 5. Reverse Leakage Current: The VSSB310 exhibits slightly higher leakage current (250 µA vs. 200 µA), which could have a minor impact in high‑voltage or low‑power‑sensitive circuits.