The 1SMA4746A is a Zener Diode with a surface mount, RoHS compliant package manufactured by Microdiode Electronics. It has a SMA (DO-214AC) package that provides excellent thermal characteristics, allowing it to be used for high power applications. This diode has a reverse breakdown voltage rating of 46V, while it can handle maximum power dissipation of up to 500mW. It has a high temperature stability of less than 5% voltage deviation from 25°C to ambient temperatures as high as 175°C. This Zener Diode also features an incredibly low reverse leakage current, making it an ideal choice for power conditioning and protection applications. Additionally, its environmental specifications make it well suited for use in various applications including automotive electronics and consumer electronics.