Original Part
Alternative Part
1. SMCJ58A-13 Substitution Conclusion
From the perspective of core electrical parameters and package, the SMCJ58A-13 is a direct substitute for the original part. Its key specifications—including reverse standoff voltage (58V), clamping voltage (93.6V @ 16A), peak pulse power (1500W), and package (DO-214AB)—are identical to those of the original. This ensures full compatibility in terms of overvoltage protection performance (such as response speed and clamping capability) and physical mounting within the circuit. The primary difference is that this Diodes Incorporated part does not claim to possess the MIL-PRF-19500 military-grade qualification associated with the original component. For commercial or industrial applications not requiring military specifications or high-reliability certification, it serves as a qualified and cost-effective alternative. However, it is not a direct substitute for projects with explicit military-standard or corresponding reliability certification requirements.
2. SMCJ58A Substitution Conclusion
The Littelfuse SMCJ58A is a viable substitute for the original part in most respects. Its key protection parameters (58V standoff, 93.6V clamping, 1500W peak power) and package are identical to the original, ensuring consistent basic protection functionality. Two minor differences exist: first, its rated peak pulse current is 16.1A, slightly higher than the original's 16A. This represents a small positive margin, theoretically allowing it to handle marginally higher transient currents under equivalent test conditions, which is harmless to the application. Second, similar to the SMCJ58A-13, it also does not claim MIL-PRF-19500 military qualification. This part is suitable for general commercial or industrial applications where brand preference or supply chain considerations are factors and military certification is not mandatory. It cannot be used directly in applications requiring such military certification.
Analysis ID: C93B-F743000
Based on part parameters and for reference only. Not to be used for procurement or production.
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