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The SM6K43A is a high-power unidirectional TVS diode rated at 6600W peak pulse power (10/1000µs), specifically designed to protect high-voltage DC power rails from severe transient overvoltage events. Housed in a rugged DO-218AB package, it offers low leakage current, fast response time, and excellent clamping capability. The SM6K43A is well suited for automotive load dump protection, industrial control power inputs, communication infrastructure, and energy systems where reliable surge suppression and long-term stability are required.
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