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The ESD5V0D9B is optimized for protecting high-speed signal lines and sensitive portable electronics from electrostatic discharge and transient overvoltage events. With a 5V reverse working voltage, breakdown range around 5.5–7.5V, and clamping voltage of approximately 11V at 8A surge current, it ensures fast response below 1ns and maintains junction capacitance as low as 15pF. Supporting ±30kV IEC ESD immunity and compact SOD-923 footprint, it is ideal for smartphones, digital cameras, portable power rails, and dense high-speed interface designs.