1. Current Rating and Forward Voltage Drop: The MURS260’s rated current (2A) is double that of the ER1J-LTP (1A), and its forward voltage drop (1.45V @ 2A) is significantly lower than the ER1J-LTP’s (1.7V @ 1A). At the same current level, the MURS260 exhibits lower conduction loss and superior thermal performance, making it more suitable for higher current or more demanding thermal conditions. 2. Reverse Recovery Time: The trr of the ER1J-LTP (35ns) is only half that of the MURS260 (75ns), indicating faster switching speed and lower reverse recovery charge. In high-frequency switching applications (e.g., SMPS, PFC), a shorter trr reduces switching losses and EMI noise. This difference may impact system efficiency and stability. 3. Junction Capacitance: The ER1J-LTP provides a specified junction capacitance parameter (15pF @ 4V), whereas the MURS260 does not. Junction capacitance affects impedance characteristics and switching transients at high frequencies, requiring careful evaluation in RF or high-speed switching circuits. Substitution Recommendations: - If the application current is ≤1A and is sensitive to switching frequency (>100kHz), the ER1J-LTP should be prioritized. - If higher current margin or lower conduction loss is required, and the switching frequency is relatively low, the MURS260 may be used. However, its trr and junction capacitance must be verified to ensure they meet dynamic performance requirements.