UDZSTE-172.4B Discrete Semiconductor Products

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The UDZSTE-172.4B diode is a single Zener diode, which is a type of diode that relies on the unique properties of Zener junctions in order to allow or prohibit the flow of current. It is mainly used in surge protection circuits and as a temperature-compensated reference element.

Description

The UDZSTE-172.4B diode is a unidirectional diode that has a reversed P-N junction. It is designed with a special structure, which allows it to maintain a stable voltage when its forward current is between 200mA and 400mA. The breakdown voltage of the UDZSTE-172.4B diode is around 5.5V. It has a forward voltage drop of 0.5V and it can dissipate a power of up to 2W. The diode also has a maximum reverse leakage current of 5mA.

Application Field

The UDZSTE-172.4B diode is mainly used in surge protection circuits, as it can withstand high voltage surges. It is also used to protect sensitive electronics and components, as it can limit the voltage or current flowing through them. Additionally, the UDZSTE-172.4B diode is used as a temperature-compensated reference element in devices such as regulators and timers, where it helps to maintain a stable voltage even when there is a change in temperature.

Working Principle

The working principle of the UDZSTE-172.4B diode relies on the special properties of Zener junctions. This type of diode is used in reverse bias, where a voltage is applied in the opposite direction to the P-N junction. This causes the depletion region at the junction to widen, allowing current to flow. When the applied voltage reaches a certain level known as the Zener voltage or breakdown point, electrons start to flow across the junction in the reverse direction, creating a large amount of current. This effect is known as Zener breakdown, and it is what makes this type of diode so useful in surge protection circuits and temperature-compensated reference elements.

Conclusion

The UDZSTE-172.4B diode is a single Zener diode that is used in surge protection circuits and other applications. It relies on the special properties of Zener junctions in order to allow or prohibit the flow of current. The diode has a breakdown voltage of 5.5V, a forward voltage drop of 0.5V, and a maximum reverse leakage current of 5mA. It is mainly used to limit the voltage or current flowing through sensitive electronics and components, as well as to serve as a temperature-compensated reference element in certain circuits.

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