1PMT4123E3/TR13

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Diodes - Zener - Single are used for voltage regulation and for establishing breakdown voltages for other devices. The 1PMT4123E3/TR13 is a single zener diode with a voltage rating of 12.3V, perfect for demanding low temperature applications. It offers low forward voltage drop, a high capacitance ratio, and excellent power handling performance.

1PMT4123E3/TR13 Application Field and Working Principle

The 1PMT4123E3/TR13 diode is well suited to a wide range of applications. It is often used in linear regulators, switched-mode power supplies, and automotive applications. It can also be used in voltage reference circuits, such as for TV circuits, and as a load switch for microprocessor power supplies.

The working principle of a zener diode can be explained in terms of how it would act in a circuit. As the voltage across a zener diode increases, the current through it increases as well. This increase in current causes a small amount of power to be dissipated in the diode. This power dissipated in the diode is equal to the voltage across the diode multiplied by the current through the diode. As the voltage across the zener diode increases, the power dissipation in the zener diode increases, causing the voltage across the zener diode to eventually reach a stable level.

At this stable point, any further increase in the voltage across the diode will not cause an increase in the current through it. This voltage, known as the breakdown voltage, is typically specified in the diode\'s datasheet. The 1PMT4123E3/TR13\'s breakdown voltage is 12.3V. Once the breakdown voltage is reached, any further increase in the voltage across the diode will not cause an increase in the current through it. This effect is called avalanche breakdown.

The breakdown voltage is the most important parameter of a zener diode. It is the voltage at which the zener diode begins to operate as a voltage regulator. As the voltage across the diode increases, the current through it increases and the diode begins to dissipate power. This power dissipated by the diode is what sets the breakdown voltage, and when this voltage is reached, the zener diode begins to act as a voltage regulator. This can be used to limit the output voltage and provide protection against overvoltage in a circuit.

Certain parameters must be taken into account in order to get an accurate measure of the breakdown voltage of a zener diode. These parameters include the temperature coefficient (TC), the reverse current (Iz), the dynamic resistance (Rz), and the forward voltage (Vf). TC is a measure of how the breakdown voltage varies with temperature. Iz is a measure of the amount of current that can flow through the diode in the reverse direction. Rz is a measure of how the current varies with voltage, and Vf is a measure of how the forward voltage drop varies with temperature.

When selecting a zener diode, it is important to consider the parameters of the diode such as its breakdown voltage, temperature coefficient, reverse current and dynamic resistance. The 1PMT4123E3/TR13 has excellent power handling performance, a high capacitance ratio, and a low forward voltage drop. This makes it an excellent choice for low temperature applications.

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