Original Part
Alternative Part
1. SMDJ26A-HRA Substitution Conclusion
Based on the provided core electrical parameters and package, the SMDJ26A-HRA can serve as a direct and complete substitute for the original SMDJ26A part. Both devices are identical in all key performance specifications, including reverse standoff voltage (26V), breakdown voltage (28.9V Min), clamping voltage (42.1V @ Ipp), peak pulse current (71.3A), and power rating (3000W). They also share the same DO-214AB (SMC) package footprint. The suffix "-HRA" is typically a manufacturer-specific product series code or identifier. It may denote differences in production lines, quality control grades, or internal catalog classifications. However, these distinctions do not alter the fundamental electrical characteristics or surge protection capability of the device. Therefore, the parts are functionally interchangeable.
2. SMDJ26A-HRAT7 Substitution Conclusion
Analysis of the given parameters confirms that the SMDJ26A-HRAT7 is also a fully compatible replacement for the original SMDJ26A. All core electrical specifications (voltage, current, power) and the package are identical to the original part. The extended suffix "-HRAT7" adds further identification compared to "-HRA". In industry practice, suffixes like "T7" commonly indicate specific packaging formats (e.g., tape-and-reel, reel specifications) or order codes, rather than differences in electrical performance. The protective function of both components on the PCB is equivalent. The primary distinction likely lies in the incoming material packaging, which affects handling in the production process but has no impact on circuit design or in-circuit performance. A direct functional substitution is valid.
Analysis ID: E209-274D000
Based on part parameters and for reference only. Not to be used for procurement or production.
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