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Original Part

Diode 400 V 1A Surface Mount DO-214AA (SMB)

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Alternative Part

Diode 400 V 1A Surface Mount DO-214AA (SMB)

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Substitution Feasibility Conclusion

The FR1G can directly replace the FR1G_R1_00001, but the impact of the difference in reverse leakage current on the specific application requires evaluation.

Comparison Points

1. Reverse Leakage Current: The SMC FR1G is rated at 5 µA @ 400V, while the Panjit FR1G_R1_00001 is rated at 1 µA @ 400V. Under high-voltage and high-temperature conditions, the static power dissipation of the SMC device may be higher, which could have a minor impact on high-efficiency or low-power designs. 2. Junction Capacitance: The SMC device has a capacitance of 10pF compared to 12pF for the Panjit part. The slightly lower capacitance of the SMC device may result in marginally lower switching losses and noise in high-frequency switching applications, though the difference is minimal and its practical impact is likely limited. 3. Manufacturer & Price: The Panjit part ($0.320) is priced over ten times higher than the SMC device ($0.030). This reflects differences in brand premium, quality control, or testing standards. The SMC component offers a significant cost advantage; however, its long-term reliability must be verified to ensure it meets the application requirements.
Analysis ID: 5431-300F000
Based on part parameters and for reference only. Not to be used for procurement or production.
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