The ZM4746A-GS08 is a Zener diode manufactured by Vishay with an 18-volt, 1-watt rating and 5% tolerance. It is a single-sided, axial-leaded device suitable for use with general-purpose electronics. It is designed for use in AC and DC circuits in applications such as voltage regulation, overvoltage protection, and static switching. The ZM4746A-GS08 exhibits excellent dynamic characteristics when used in low-current applications. The diode is rated for an ambient temperature of -55°C to +175°C. It is capable of handling pulse power up to 3W. The device is also RoHS and ESD compliant.