The BZX55B20 is a single Zener diode that is commonly used in electronic applications for voltage regulation and protection. It is a part of the BZX55 series of Zener diodes, known for their high performance and reliability. The BZX55B20 has a voltage rating of 20V and a power rating of 500mW, making it suitable for a wide range of low-power applications. With a low forward voltage drop of 1V at 100mA, it ensures efficient operation and minimal power loss. The diode has a reverse leakage current of 100nA at 15V, providing excellent performance in preventing current flow in the reverse direction. It is designed for through-hole mounting and comes in a DO-204AH package, making it easy to integrate into circuit designs. Manufactured by Taiwan Semiconductor, the BZX55B20 is a reliable and high-quality component that meets industry standards and is suitable for various electronic projects.