Original Part
Diode Array 1 Pair Common Cathode 60 V 20A Through Hole TO-220-3
Alternative Part
Diode Array 1 Pair Common Cathode 60 V 20A Through Hole TO-220-3
Substitution Feasibility Conclusion
In most general applications, the STPS41L60CT can directly replace the SDT40A60VCT. However, reverse leakage current and low-temperature startup characteristics must be evaluated to ensure they meet application requirements.
Comparison Points
1. Reverse Leakage Current (Critical Parameter Difference)
SDT40A60VCT: 200 µA @ 60 V
STPS41L60CT: 600 µA @ 60 V
The ST device exhibits three times the leakage current of the SDT part. This may lead to higher static power dissipation and temperature rise, particularly in high-temperature or high-voltage applications, requiring attention to thermal design margin.
2. Operating Temperature Range Specification Difference
SDT40A60VCT: Clearly specifies the full junction temperature range (-55°C to 150°C)
STPS41L60CT: Only indicates maximum junction temperature (150°C Max)
The ST device does not explicitly guarantee low-end performance. If the application involves startup or reliability requirements at -55°C, the full temperature specifications in its datasheet must be verified.
3. Price and Brand Premium
The ST device is priced approximately 38% higher, reflecting differences in STMicroelectronics’ brand reliability, consistency testing, or supply chain costs, though electrical parameters are essentially aligned.
Analysis ID: 7CE0-3B2C000
Based on part parameters and for reference only. Not to be used for procurement or production.
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