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The SMA6J58A-H is an automotive-grade unidirectional TVS diode rated at 600W peak pulse power with a 10/1000µs waveform. Qualified to AEC-Q101, it is designed to protect 58V DC power rails from load dump, lightning-induced, and switching transients, providing low leakage, fast response, and stable clamping in a DO-214AC (SMA) package for automotive and industrial power systems.