The ZMM5263B_R1_10001 with Zener Diodes LL34 RoHS is a package of 100 diodes manufactured by Panjit. These diodes are designed to function as a voltage-regulating device by allowing current to flow in one direction and preventing it from flowing in the opposite direction. They are RoHS compliant, meaning they meet the EU’s Restriction of Hazardous Substances directive, which involves limiting the concentration of hazardous substances in electronic products. When used in a circuit, the ZMM5263B_R1_10001 diodes will provide a set voltage from a high- or low-voltage environment. This makes them ideal for use in a variety of applications, such as voltage protection for sensitive components, voltage regulation for power supplies, overvoltage protection for data lines, and noise suppression.