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The SMCJ78A-H is an automotive-grade, high-reliability TVS diode designed for transient overvoltage protection in 48V automotive power systems. With a 1500W peak pulse capability (10/1000µs) and AEC-Q101 compliance, it provides fast clamping against load dump, surge, and switching transients. The DO-214AB (SMC) package ensures compact and reliable PCB integration.