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The 5.0SMDJ54A-H is an automotive-grade, high-reliability TVS diode designed to protect sensitive electronic components from high-energy transient overvoltage events on 54V DC power lines. Rated at 5000W peak pulse power (10/1000µs) and compliant with AEC-Q101, it delivers fast clamping response, low dynamic resistance and excellent surge handling capability. Housed in a DO-214AB (SMC) package, it is ideal for automotive power distribution, industrial power supplies and high-voltage DC protection circuits.