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The SM8K30A is a high-power unidirectional transient voltage suppression diode rated at 8000W peak pulse power (10/1000µs), designed to protect 30V DC power rails from severe transient overvoltage events. Housed in a rugged DO-218AB package, it offers fast response, low leakage current, and strong clamping capability for automotive electronics, industrial control systems, communication equipment, and energy infrastructure.