The ZMM5V6-MS is a single 5.2-6 Volt 500mW 5.6 Volt low-leakage zener diode manufactured by MSKSEMI. It is RoHS compliant and has a rated current of 0.1uA at 1V and a resistance of 25O. This type of diode is used for voltage regulation, voltage reference, and overvoltage protection in electronic circuits. It is designed to have low power consumption, which helps reduce the amount of heat generated in circuits.