Original Part
Alternative Part
1. SMDJ28A Substitution Conclusion
Fully substitutable. The SMDJ28A is identical to the original YAGEO SMDJ28A/TR13 in all key electrical parameters, including reverse standoff voltage (28V), minimum breakdown voltage (31.2V), maximum clamping voltage (45.4V @ Ipp), peak pulse current (69.2A), and peak pulse power (3kW). Both share the same DO-214AB (SMC) package. The only distinction lies in the manufacturer (Littelfuse vs. YAGEO). The two parts are fully compatible electrically and mechanically, allowing for direct replacement. However, note that minor differences may exist in manufacturing processes, reliability testing, or supply chain stability between manufacturers. It is recommended to validate long-term reliability in the actual application.
2. SMDJ28A-T7 Substitution Conclusion
Fully substitutable. The SMDJ28A-T7 matches the original part exactly in electrical specifications and package, with no technical differences. The suffix “-T7” typically denotes Littelfuse’s internal packaging or tape‑and‑reel specification (e.g., reel quantity, orientation). This variant is electrically equivalent to the original part, though the physical packaging format may differ. During replacement, ensure compatibility with the placement equipment regarding packaging details such as tape width and pin orientation. The electrical performance and protection functionality remain unchanged.
Analysis ID: 634B-FBD2000
Based on part parameters and for reference only. Not to be used for procurement or production.
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