UDZVTE-178.2B

The UDZVTE-178.2B is a specific type of Zener diode manufactured by Rohm Semiconductor, designed for voltage regulation and protection applications. Here’s a detailed description of its features and specifications:

General Overview

• Type: Zener Diode
• Manufacturer: Rohm Semiconductor
• Part Number: UDZVTE-178.2B

Key Specifications

• Zener Voltage (Vz): The UDZVTE-178.2B has a nominal Zener voltage of 178.2V, which means it can maintain a stable voltage of approximately 178.2 volts across its terminals when reverse-biased.
• Power Dissipation (Pd): This diode is capable of handling a maximum power dissipation of around 5W, making it suitable for various applications where power management is crucial.
• Reverse Current (Iz): The typical reverse current at the Zener voltage is specified, allowing designers to understand how much current the diode will conduct in its breakdown region.
• Temperature Coefficient: The temperature coefficient indicates how the Zener voltage changes with temperature, which is important for applications requiring stable performance across varying environmental conditions.

Physical Characteristics

• Package Type: The UDZVTE-178.2B is typically housed in a DO-41 package, which is a cylindrical glass package that provides good thermal performance and reliability.
• Dimensions: The package dimensions are standard for DO-41, allowing for easy integration into various circuit designs.
• Lead Configuration: The diode features two leads for easy mounting on printed circuit boards (PCBs).

Applications

• Voltage Regulation: The UDZVTE-178.2B is commonly used in voltage regulation circuits to maintain a constant output voltage despite variations in input voltage or load conditions.
• Overvoltage Protection: It can be employed to protect sensitive electronic components from voltage spikes by clamping excess voltage to a safe level.
• Signal Clamping: The diode can also be used in signal clamping applications to prevent signal distortion due to overvoltage conditions.

Performance Characteristics

• Dynamic Resistance: The dynamic resistance of the diode in its breakdown region is low, which contributes to its effectiveness in voltage regulation.
• Temperature Range: The diode operates effectively over a wide temperature range, making it suitable for various environmental conditions.

Conclusion

The UDZVTE-178.2B from Rohm Semiconductor is a robust Zener diode designed for high-voltage applications, offering reliable performance in voltage regulation and protection circuits. Its specifications make it a versatile component for engineers and designers looking to ensure stable operation in their electronic designs.