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The SA54A is a unidirectional transient voltage suppressor rated at 500W peak pulse power (10/1000µs), designed to protect 54V DC circuits from lightning surges, inductive load switching, and transient overvoltage events. Packaged in a DO-15 axial form factor, it provides fast response, low leakage current, and reliable clamping performance for industrial power supplies, control systems, and communication equipment.
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