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The 6.6SMDJ40CA-H is an automotive-grade bidirectional TVS diode designed to protect 40V DC power rails from high-energy transient overvoltage events. Rated at 6600W peak pulse power (10/1000µs) and compliant with AEC-Q101 and ISO 7637-2, it provides symmetrical clamping, fast response and excellent surge endurance. The DO-214AB (SMC) package enables compact, high-reliability designs.