1SMA4764A is a SMA Zener Diode made by ShunYe, with a reverse voltage of 4.7V and a peak current of 2W. This Zener Diode is designed for use in essentially all electronic circuits where a stable voltage reference is required, acting as a "voltage regulator" when connected in parallel with a voltage source. It is RoHS compliant, and designed for use in high temperature applications exceeding 105°C. The 1SMA4764A ensures stable, accurate control over the voltage it supplies. It is designed for reliable, long-term operation with high temperature ratings, making them Suitable for use in automotive, telecom, and industrial applications.