The CMHZ5251B is a surface mount Zener diode manufactured by Central Semiconductor. This single diode features a Zener voltage of 20V with a tolerance of ±5%, making it suitable for precise voltage regulation. With a power dissipation of 500mW, it's designed for various electronic applications requiring stable voltage references or overvoltage protection. Its compact surface mount package allows for efficient board assembly. As an authorized distributor of Central Semiconductor, Supreme Components International guarantees the authenticity and quality of the CMHZ5251B. This diode is commonly used in power supplies, communication equipment, and instrumentation.