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The SMA6J300A is a unidirectional transient voltage suppression diode rated at 600W peak pulse power with a 10/1000µs waveform. Designed for 300V DC power lines, it provides fast response, low leakage current, and stable clamping characteristics. Housed in a DO-214AC (SMA) package, it is suitable for industrial control, power supplies, energy systems, and high-voltage DC surge protection applications.