The CMKZ5251B Zener diode, manufactured by CENTRAL SEMICONDUCTOR, is a crucial component for voltage regulation and protection in electronic circuits. Supreme Components International is an authorised distributor of CENTRAL SEMICONDUCTOR components. This single Zener diode features a nominal Zener voltage of 20V with a ±5% tolerance, ensuring precise voltage control. Packaged in a compact SOD-523 surface-mount package, it's suitable for high-density PCB designs. With a power dissipation of 500mW, the CMKZ5251B provides reliable performance in a variety of applications, including voltage clamping, transient suppression, and voltage referencing. Its small size and robust characteristics make it a versatile choice for modern electronic devices.