CZRA4731-HF

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The CZRA4731-HF is a single diode in the Zener category. It provides an active voltage reference at an operating current of 1mA, and is manufactured in a DO-34 package.

The CZRA4731- HF is designed for use in electronic circuits and high temperature applications. Its maximum operating temperature range is from -55°C to +150°C. This device is suitable for low voltage and high voltage circuits, and has low reverse leakage current, which makes it ideal for applications that require minimal noise or interference.

The CZRA4731-HF is a silicon die with a zener guard ring to provide efficient voltage regulation. It is designed to provide a reference voltage of 4.731 volts, with a tolerance of 1%, and a maximum zener impedance of 40 ohms at 1mA.

The working principle of the CZRA4731-HF is based upon the voltage breakdown effect that occurs when a diode is biased with a reverse voltage greater than its breakdown voltage. In this diode, the breakdown voltage is 4.731 volts, and when a voltage greater than this threshold is applied, the voltage across the diode is maintained, and the current that passes through it is limited to a predefined level. This allows a regulated DC voltage to be provided within a specified range.

The CZRA4731-HF is used in a broad range of applications, such as voltage clamping, voltage regulator modules, overvoltage protection, AC line protection, and other general purpose applications.

In voltage clamping applications, the CZRA4731-HF can be used as a low impedance path for transients, providing protection for sensitive circuit nodes. It also prevents excessive voltage from being present in the circuit, as it limits the voltage between two terminals to its breakdown voltage. This is especially useful for preventing voltage spikes in AC line protection applications.

In voltage regulator modules, the CZRA4731-HF is used to provide a regulated and stable output voltage, regardless of changes in the input voltage. It is also commonly used in overvoltage protection applications, as it can be configured to limit the output voltage to a desired level, while still allowing the input voltage to exceed this level. This ensures that the system is protected from any unexpected voltage spikes.

The CZRA4731-HF is also suitable for other general purpose applications which require a voltage reference, such as oscillators, timing circuits, and power supplies. As it is able to operate at a wide variety of temperatures, it is also suitable for high temperature applications.

In conclusion, the CZRA4731-HF is a single zener diode package which provides an effective voltage reference for a variety of applications. Its low impedance and voltage breakdown characteristics make it well-suited for overvoltage protection, voltage clamping, and voltage regulator modules, in addition to its use in high temperature applications.

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