Original Part
Diode Array 1 Pair Common Cathode 100 V 15A Surface Mount TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Alternative Part
Diode Array 1 Pair Common Cathode 100 V 15A Surface Mount TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Substitution Feasibility Conclusion
The NTSB30U100CTG can directly replace the VB30100C-E3/4W, offering equivalent performance in most standard applications. However, a slight difference in thermal dissipation should be noted due to its moderately higher reverse leakage current under high-temperature/high-voltage conditions.
Comparison Points
1. Reverse Leakage Current (Ir @ Vr): The NTSB30U100CTG (675 µA) exhibits approximately 35% higher leakage compared to the VB30100C-E3/4W (500 µA). Under extreme conditions—specifically at maximum junction temperature (150°C) and maximum reverse voltage (100V)—the ON Semiconductor device will have slightly higher static power dissipation. This may have a minor negative impact on overall system efficiency at high temperatures and on temperature rise, which should be evaluated against stringent thermal design margins.
2. Technology Platform/Series: The VB30100C belongs to Vishay's TMBS® (Trench MOS Barrier Schottky) platform. This technology utilizes a trench structure to achieve a better balance between forward voltage drop (VF) and reverse leakage current (Ir) for a given die area. The NTSB30U100CTG does not specify a special platform and likely employs a more conventional planar Schottky or similarly optimized structure. This accounts for the difference in leakage current parameter and suggests that, under non-extreme operating conditions, the Vishay device may offer marginally better overall conduction and switching loss performance.
Analysis ID: E1DB-B582000
Based on part parameters and for reference only. Not to be used for procurement or production.
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