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The SMCJ12A-H is an automotive-grade, high-reliability TVS diode designed for transient overvoltage protection in 12V automotive power systems. Rated at 1500W peak pulse power (10/1000µs) and compliant with AEC-Q101, it provides fast clamping response to suppress load dump, lightning surges, and switching transients. The DO-214AB (SMC) package ensures compact PCB integration and reliable long-term performance.