BZX384-C3V9,115

The BZX384-C3V9,115 is a precision voltage reference diode manufactured by Nexperia, designed for use in various electronic applications requiring stable voltage regulation. Here’s a detailed description of its key features and specifications:

General Description:

The BZX384-C3V9,115 is a Zener diode that provides a fixed reference voltage of 3.9 volts. It is part of the BZX series of Zener diodes, which are known for their reliability and precision in voltage regulation. This component is particularly useful in applications such as voltage clamping, voltage regulation, and as a reference voltage source in circuits.

Key Features:

• Voltage Reference: The diode provides a stable output voltage of 3.9V, making it suitable for applications that require a consistent reference voltage.
• Power Dissipation: The device can handle a maximum power dissipation of 500 mW, allowing it to operate effectively in various circuit conditions without overheating.
• Temperature Coefficient: The BZX384-C3V9,115 has a low temperature coefficient, ensuring that its voltage reference remains stable across a range of operating temperatures, typically from -55°C to +150°C.
• Package Type: It is available in a small SOT23 package, which is advantageous for space-constrained applications. The compact size allows for easy integration into printed circuit boards (PCBs).
• Low Noise: The diode exhibits low noise characteristics, making it suitable for sensitive analog applications where signal integrity is crucial.

Electrical Characteristics:

• Reverse Voltage (Vz): 3.9V at a specified test current (Izt).
• Test Current (Izt): Typically around 5 mA, which is the current at which the Zener voltage is specified.
• Dynamic Impedance (Zz): The dynamic impedance is low, ensuring minimal voltage variation with changes in current, which is critical for maintaining a stable reference voltage.
• Reverse Leakage Current (Ir): The reverse leakage current is low, contributing to the overall efficiency and reliability of the diode.

Applications:

The BZX384-C3V9,115 is widely used in:

• Voltage regulation circuits
• Reference voltage sources for analog-to-digital converters (ADCs)
• Power supply circuits
• Signal conditioning applications
• Clamping circuits to protect sensitive components from voltage spikes

Conclusion:

The BZX384-C3V9,115 from Nexperia is a versatile and reliable Zener diode that provides a stable 3.9V reference voltage, making it an essential component in various electronic designs. Its compact size, low noise, and excellent thermal stability make it suitable for a wide range of applications in both consumer and industrial electronics.