The ZMM43B Zener Diode is a 0.5 watt, 43 volt SMD, MiniMELF diode manufactured by Diotec, mounted in tape. This diode is designed to regulate and protect circuits, as well as provide lower zener voltages than most standard diodes. It can be used in a wide variety of applications, including voltage regulators, lighting control, and many more. This part has a lead-free termination and is halogen-free, making it RoHS compliant.