Alternative Part
N-Channel 75 V 160A (Tc) 300W (Tc) Through Hole TO-220AB
Substitution Feasibility Conclusion
In most mid-to-low frequency applications without extreme thermal design requirements, the IRF2907ZPBF can directly replace the FDP047N08. However, attention should be paid to the potential increase in drive losses and thermal risk at higher switching frequencies, and thermal dissipation conditions must be verified to ensure they meet its higher rated power dissipation.
Comparison Points
1. Switching Performance Difference: The gate charge of the IRF2907ZPBF (Qg = 270 nC) is significantly higher than that of the FDP047N08 (Qg = 152 nC). At the same switching frequency, the driver circuit must supply higher current, resulting in greater switching losses and limiting the maximum applicable frequency.
2. Thermal Design Margin Difference: The IRF2907ZPBF has a higher rated maximum power dissipation of 300 W (Tc) compared to 268 W (Tc) for the FDP047N08, indicating that its TO-220AB package may offer better thermal conduction characteristics. This could be advantageous in applications with constrained thermal conditions.
3. On-Resistance Test Conditions: The Rds(on) of the IRF2907ZPBF (4.5 mΩ) is specified at 75 A, while that of the FDP047N08 (4.7 mΩ) is specified at 80 A. Although the values are close, the different test currents mean that the actual conduction loss difference under high current conditions should be evaluated based on the specific operating point.
Analysis ID: 5815-1000000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com