The MTZJT-7215B is a Zener diode, specifically a metal-oxide-semiconductor diode (MOS diode) with an integral zener junction, manufactured by ROHM. It meets the European Union's Restriction of Hazardous Substances (RoHS) regulation. This device is a three-pin, low-power, silicon-oxide-based Zener diode with a maximum ratings of 3.3V and 130 mW power. It is packaged in an industry-standard SOD-323 package for surface-mount and through-hole applications. This device features a breakdown voltage range of 2.4V to 5.6V, high reverse voltage capabilities and low leakage current. Additionally, it provides protection against static or transient DC overvoltage, as well as high surge current. The MTZJT-7215B from ROHM is suitable for use in automotive, communication, consumer, and industrial applications.