Replacement Components to SMDJ58A: MSMLJ58A and 3.0SMCJ58A

Original Part

SMDJ58A

Littelfuse Inc.

93.6V Clamp 32.1A Ipp Tvs Diode Surface Mount DO-214AB (SMCJ)

Alternative Part

MSMLJ58A

Microchip Technology

93.6V Clamp 32A Ipp Tvs Diode Surface Mount DO-214AB

3.0SMCJ58A

SMC Diode Solutions

93.6V Clamp 32A Ipp Tvs Diode Surface Mount DO-214AB (SMC)

1. MSMLJ58A Substitution Conclusion Based on core electrical performance, package, and functionality, the MSMLJ58A can serve as a substitute for the SMDJ58A. The key distinction lies in the MSMLJ58A's "Military" grade and its "MIL-PRF-19500" certification, which are not specified for the original part. The MSMLJ58A typically adheres to more stringent military standards for manufacturing, reliability verification (including tighter screening, testing, and warranty), making it suitable for applications demanding the highest reliability and environmental robustness, such as aerospace and military systems. Consequently, its procurement cost and lead times may be higher than those of standard industrial-grade components. Beyond this, the two devices are identical in all critical protection parameters: a 58V reverse standoff voltage, 93.6V clamping voltage, and 3000W peak pulse power. Both also utilize the same unidirectional DO-214AB (SMC) package. Therefore, for the vast majority of industrial or consumer electronics applications, the MSMLJ58A can be considered a direct, high-performance drop-in replacement.

2. 3.0SMCJ58A Substitution Conclusion From the perspective of core electrical parameters and package specifications, the 3.0SMCJ58A is a direct, functional substitute for the SMDJ58A. The only measurable difference is a minor variance in peak pulse current (Ipp): the original part is rated at 32.1A, while the 3.0SMCJ58A is rated at 32A. This 0.1A discrepancy is negligible in practical engineering applications and does not impact the shared 3000W peak power capability under the 10/1000µs standard waveform or the 93.6V clamping protection level. All other key parameters—including the 58V reverse standoff voltage, 64.4V minimum breakdown voltage, and SMC package—are identical. This model is therefore a fully equivalent replacement. However, it is important to note the change in manufacturer to SMC Diode Solutions. Potential differences may exist in the supply chain source, brand reputation, and the historical database for long-term reliability compared to the original brand.

Analysis ID: D083-F048000

Based on part parameters and for reference only. Not to be used for procurement or production.