The MMSZ4703-TP is a Zener diode manufactured by Micro Commercial Components (MCC). It has a 500mW ZENER rating and has a power dissipation of 400mW. The MMSZ4703-TP has a breakdown voltage of 4.7V, and reverse voltage of 5.2V. It has a standard Zener impedance of 19 ohms and maximum operating temperature rating of 125°C. The MMSZ4703-TP is ideal for applications such as voltage regulation, current limit protection, ESD protection, and reverse polarity protection.