The ZMM5225B is a low noise, three terminal Zener diode manufactured by Semtech and designed to provide stable voltage regulation in the 3.3V down to 18V range. It features an ultra low noise design that helps reduce electronic noise in your system. The ZMM5225B is made with a 55V Zener Diode LL-34 RoHS that offers excellent temperature stability, superior reliability, and ease of use. The Zener diode also comes in a miniature footprint to save space. It is RoHS compliant and has minimal power dissipation. It can be used in a wide variety of applications, such as, voltage regulation, temperature compensation, signal processing, surge protection, and more. Furthermore, the ZMM5225B comes with electrostatic discharge and surge protection for added security.