TZX2V4B-TR

The TZX2V4B-TR application field and working principle relate to Diodes - Zener - Single. A Zener diode, or a breakdown diode, is a type of diode capable of regulating voltage across a given range. It is also commonly used to protect components from voltage spikes. This type of diode is formed from a PN junction, also known as a depletion layer, with a lightly doped N side and a heavily doped P section. This creates a diode with a higher breakdown voltage and very stable reverse current compared to other diodes. The TZX2V4B-TR is a two-terminal 400mW zener voltage regulator.

TZX2V4B-TR is mainly applied in two areas.

• In line regulation: This technology is used to provide a constant voltage across a circuit despite changes in environmental conditions. It is commonly found in voltage regulation applications such as LED and LCD displays.
• Surge protection: Zener diodes are used to create a voltage limit so that a large current does not flow through a circuit when there is a voltage surge. This protects other components from damage caused by large current spikes.

The working principle of the TZX2V4B-TR is based on the fact that, when the reverse voltage is increased beyond a certain level, breakdown occurs in the diode, allowing it to provide a constant voltage regulation. This is known as the Zener Breakdown. The voltage at which this phenomenon occurs is called the Zener voltage. Typically, this is specified in the Zener diode data sheet. For the TZX2V4B-TR, the Zener voltage is 3.6 to 5.6V.

The current through the TZX2V4B-TR is determined by the voltage connected to it. When the voltage increases, the current will also increase at a linear inverting rate. As the current increases, it also decreases the device\'s thermal equilibrium, reducing its Zener voltage until the diode can no longer maintain the constant regulated voltage and begins to drop slowly.

The TZX2V4B-TR is a useful device for controlling voltage in applications requiring a stable and reliable voltage source, such as the previously mentioned line regulation and surge protection. Its maximum power rating of 400mW is its primary limitation and means that it is more suitable for low power applications. In respect to physical size and configuration, it is lightweight and very small in size making it perfect for use in situations with limited space such as in laptops, mobile phones and other handheld devices.

To sum up, the TZX2V4B-TR is a two-terminal 400mW zener voltage regulator that is primarily used for two applications, in line regulation and surge protection. It works using the Zener Breakdown phenomenon and can provide a constant regulated voltage up to a maximum of 400mW. The device is small in size and lightweight making it suitable for use in applications with limited space such as handheld devices.