The electronic part 1SMA4728_R1_00001 is a Zener diode SMA RoHS manufactured by Panjit. It is a small signal device that is sold as a single component. The diode is made of a glass-encapsulated, silicon chip semiconductor with leadframe construction. It is designed to provide voltage regulation, for protection against unwanted voltage spikes, and voltage clamping from a constant current source. The device has a maximum reverse voltage of 6.8V, and a maximum forward current of 200mA. It is RoHS compliant and has a junction temperature of 150°C.