2EZ4.3D10/TR8

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2EZ4.3D10/TR8 Application Field and Working Principle

The 2EZ4.3D10/TR8 is a single Zener diode that exhibits a low dynamic impedance and is specifically designed for power supply applications. Its ability to be fully specified with low power losses and low EMI emission make it an ideal choice for low-profile applications.

This diode is a multiphasic Zener diode with a nominal operating voltage of 4.3V. It is housed in a TO-220 package with a maximum DC power dissipation rating of 10W. Its two-zone configuration provides a low voltage-controlled switching capability for load current control. This diode also offers a low dynamic impedance resulting in a fast and accurate response to large changes in load current.

In power supply applications, this diode is used to provide over-voltage protection and maintain a stable voltage level over a wide range of operating conditions. During normal operation, the Zener diode acts as a voltage regulator, keeping the output voltage at a fixed value regardless of the input voltage, current, or temperature variations. The Zener diode also provides an additional feature of limiting reverse current flow, thus protecting the device from short-circuiting or over-current conditions.

The working principle of 2EZ4.3D10/TR8 is based on the Zener breakdown effect. When incoming voltage exceeds the Zener voltage, electric current will flow in the reverse direction. This reverse current increases exponentially with increasing input voltage. This breakdown phenomenon creates a barrier that prevents the input voltage from over-shooting the required output voltage. The voltage dropping ability of the diode can vary with the temperature and load impedance. Thus, it is essential to make sure to select the correct diode for the power supply design.

In summary, the 2EZ4.3D10/TR8 is an ideal Zener diode for power supply applications due to its low dynamic impedance and fast response time. Its two-zone configuration and over-voltage protection capabilities make it an excellent choice for low-profile applications wanting to maintain a stable output voltage. Consequently, it is important to select the correct diode for the design application to ensure the stable operation of the system.

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