The BZX84C3V9-AQ Zener diode, manufactured by Diptronics, is a crucial component for voltage regulation and circuit protection. This 3.9V, 250mW Zener diode is housed in a compact SOT-23 package, making it suitable for high-density PCB layouts. It provides a stable reference voltage and protects sensitive circuits from overvoltage conditions. Supreme Components International is an authorized distributor of Diptronics components, ensuring that you receive genuine and high-quality products. This diode is commonly used in applications such as voltage stabilization, clipping circuits, and surge protection. Its small size and robust performance make it a reliable choice for a wide range of electronic devices. Choose Supreme Components International for guaranteed authenticity and dependable supply.