1. Current and Power Capability ZXTP25060BFHTA: Ic = 3 A, Pd = 1.25 W NSV60200LT1G: Ic = 2 A, Pd = 0.46 W The latter requires strict limitation of current and thermal dissipation in continuous or switching applications, potentially necessitating derating or enhanced heat sinking. 2. Saturation Voltage Characteristics ZXTP25060BFHTA: Vce(sat) = 235 mV @ 3 A NSV60200LT1G: Vce(sat) = 220 mV @ 2 A Although the NSV shows a lower value, it is measured at a lower test current. In actual high-current operation (e.g., above 2 A), the ZXTP may exhibit lower conduction loss due to process optimization. 3. DC Gain and Frequency Response ZXTP: hFE(min) = 100 @ 10 mA, fT = 250 MHz NSV: hFE(min) = 150 @ 500 mA, fT = 100 MHz The NSV offers higher drive efficiency in the medium-current range, whereas the ZXTP has significantly better high-frequency performance, making it more suitable for applications requiring fast switching. 4. Leakage Current and Temperature Characteristics ZXTP: ICBO = 50 nA NSV: ICBO = 100 nA The higher cutoff leakage current of the NSV may affect power consumption and stability in the off-state, especially in high-temperature or high-precision circuits. Recommendation: If the original circuit operates at ≤1.5 A, ≤400 mW, and has no high-frequency requirements, substitution can be attempted with validation of temperature rise and dynamic response. For applications such as switching power supplies or motor drives, the original part is preferred.