NXP BZX384-C6V8: Key Specifications and Application Circuits for the 8V Zener Diode
The NXP BZX384-C6V8 is a precision 6.8V Zener diode housed in a compact SOD-323 surface-mount package, renowned for its exceptional voltage stability and low dynamic impedance. Designed for voltage regulation and protection in space-constrained electronic designs, this component is a cornerstone in modern circuit design for both consumer and industrial applications.
Key Specifications
At the heart of the BZX384-C6V8's performance is its Zener voltage (Vz) of 6.8V with a tight tolerance of ±5%, measured at a test current (Izt) of 5mA. This makes it highly predictable and reliable for precision regulation tasks. The device exhibits a low maximum dynamic impedance (Zzt) of 15Ω, ensuring that the voltage across its terminals remains stable even with variations in current. Its power dissipation is rated at 250mW at an ambient temperature of 50°C, defining its ability to handle transient energy spikes. The operating and storage junction temperature range is robust, spanning from -65°C to +150°C, making it suitable for a wide array of environmental conditions.
Primary Application Circuits
1. Basic Voltage Regulation: The most classic use of this Zener diode is in a simple shunt regulator circuit. It is placed in parallel with the load, with a series current-limiting resistor. This configuration clamps the voltage supplied to the load at approximately 6.8V, protecting sensitive components from overvoltage conditions.
2. Overvoltage Protection: The BZX384-C6V8 is frequently deployed to safeguard input pins of integrated circuits (ICs) like microcontrollers or MOSFET gates. When connected between a signal line and ground, it conducts any voltage spike exceeding its 6.8V threshold, effectively shorting the dangerous transient energy to ground and preventing damage to downstream components.
3. Voltage Reference: Due to its stable and well-defined breakdown voltage, this diode is an excellent choice for creating a low-current voltage reference in power supplies, analog-to-digital converters (ADCs), and sensor measurement circuits, providing a stable bias point critical for accurate system operation.
ICGOODFIND Summary
The NXP BZX384-C6V8 6.8V Zener diode stands out as a highly reliable and efficient solution for voltage clamping and regulation. Its combination of a precise breakdown voltage, low impedance, and a miniature form factor makes it an indispensable component for designers aiming to enhance circuit protection and stability without sacrificing valuable board space.
Keywords: Zener Diode, Voltage Regulation, Overvoltage Protection, Dynamic Impedance, SMD Component
