BZX84C3V9LT1G

The BZX84C3V9LT1G is a Zener diode manufactured by ON Semiconductor, designed for voltage regulation and protection applications. Here’s a detailed description of its key features and specifications:

General Description:

The BZX84C3V9LT1G is a low-power Zener diode that provides a stable reference voltage. It is commonly used in voltage regulation circuits, clamping applications, and as a voltage reference in various electronic devices. The diode is designed to operate in a wide range of temperatures and is suitable for both commercial and industrial applications.

Key Specifications:

• Zener Voltage (Vz): The BZX84C3V9LT1G has a nominal Zener voltage of 3.9 volts, which means it will maintain this voltage across its terminals when reverse-biased and operating in the Zener breakdown region.
• Power Dissipation (Pd): The maximum power dissipation is typically around 500 mW, allowing it to handle moderate power levels without overheating.
• Zener Impedance (Zz): The dynamic impedance is low, which ensures minimal voltage variation with changes in current, providing stable performance.
• Reverse Current (Iz): The maximum reverse current at the Zener voltage is specified, ensuring that the diode can handle the required current without failure.

Package Information:

• Package Type: The BZX84C3V9LT1G is available in a small SOT-23 package, which is surface-mountable. This compact size makes it suitable for high-density circuit designs.
• Lead Configuration: The SOT-23 package typically has three leads, with the cathode and anode clearly marked for easy identification during assembly.

Electrical Characteristics:

• Temperature Range: The diode operates effectively over a temperature range of -55°C to +150°C, making it suitable for a variety of environmental conditions.
• Voltage Tolerance: The Zener voltage tolerance is typically ±5%, ensuring that the diode can provide a reliable voltage reference.

Applications:

• Voltage Regulation: Used in power supply circuits to maintain a constant output voltage.
• Transient Voltage Suppression: Protects sensitive components from voltage spikes.
• Signal Clamping: Limits the voltage levels in signal processing applications to prevent damage to downstream components.

Conclusion:

The BZX84C3V9LT1G from ON Semiconductor is a versatile Zener diode that offers reliable voltage regulation and protection in a compact package. Its combination of low dynamic impedance, wide operating temperature range, and moderate power handling capabilities make it an excellent choice for various electronic applications.