KDZVTR3.9B Discrete Semiconductor Products

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The KDZVTR3.9B diode belongs to the Zener – Single category of diodes. It is an ideal choice for applications requiring an accurate, stable voltage reference and low dynamic impedance. This diode is designed to allow a reverse current flow when it reaches a certain breakdown voltage.

The diode is designed using a planar junction structure which ensures a low forward voltage drop and low reverse current leakage. It has a wide operating temperature range of -55°C to +150°C. The maximum allowable forward voltage drop is 0.75V, while the maximum allowable reverse current is 100 µA. The breakdown voltage and the reverse surge rating of this diode are 3.9V and 5W respectively.

KDZVTR3.9B is capable of providing an accurate voltage reference of 3.9V which is suitable for linear and switching regulators. It can be used in power stability applications, battery chargers and low voltage DC/DC converters. It can also be used for electronic protection circuitry, especially for microcontroller-based systems.

The working principle of the KDZVTR3.9B is based on the Zener effect. When a reverse voltage of more than 3.9V is applied to the diode, the diode will start conducting a current in the reverse direction. This will further reduce the voltage across the diode until the breakdown voltage of 3.9V is reached.

When the diode is forward biased, the electrons animate towards the anode and the holes towards the cathode, creating an electric current. Conversely, when the diode is reverse biased, the electric field created by the applied voltage counteracts the effect of the majority carriers, creating a potential barrier.

When the reverse voltage exceeds the Zener voltage, the electric field created by the external voltage accelerates the minority carriers, creating a small conductive path through the depletion region. This allows current to flow in the reverse direction, allowing the diode to pass the voltage and maintain a constant voltage level.

KDZVTR3.9B is an ideal choice for applications where a reliable and stable voltage reference is required. It is an excellent choice for low power and low voltage stability applications and is typically used in applications that include linear and switching regulators, battery chargers, and low voltage DC/DC converters.

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