TZX13C-TAP

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Diodes, particularly those of the Zener type and those known as single, are important components in a range of modern technology and systems. The TZX13C-TAP (Thermal Zener diode for transient energy protection) is a Zener diode with a specially designed structure to allow for higher temperature operation and surge protection. In this article, we will discuss the application field and working principle of the TZX13C-TAP Zener diode.

Overview

The TZX13C-TAP is a single-terminal, "through-hole" Zener diode, meaning it is suitable for printed circuit board (PCB) mounting. It combines the features of a PTC thermistor with those of a conventional Zener diode, allowing it to offer thermal protection as well as protection against overvoltage transients. In addition, the TZX13C-TAP has a low leakage current, making it suitable for use in high-reliability applications.

Working Principle

Like all Zener diodes, the TZX13C-TAP works on the principle of "reverse biasing". When subjected to an external voltage greater than its reversed breakdown voltage (or "Zener voltage"), electrons are dragged from the P-type to the N-type material and recombine. This allows current to flow from the P-type to the N-type material, creating a reverse bias. As the voltage across the diode increases, the current drawn increases accordingly, forming a "Zener curve".

The TZX13C-TAP also includes a PTC thermistor which features a temperature-dependent resistance (or "negative temperature coefficient") that rapidly decreases when the junction temperature rises. This increases the amount of current flowing through the diode, preventing further increases in temperature and providing effective over-temperature protection.

Application Field

The TZX13C-TAP has a wide range of potential applications, from automotive electronics and industrial process control systems, to computer motherboards and domestic appliances. It offers significant advantages over traditional Zener diodes, including higher temperature capability, low voltage drop and improved power dissipation.

In automotive applications, the TZX13C-TAP can be used to protect electronic circuits against short-term over-voltage transients. This is achieved by utilizing the Zener diode\'s reverse biasing effects which, when combined with its PTC thermistor-based self-protection, programmable over-temperature sensing and low power dissipation, enable effective surge protection without the need for extra external circuitry.

In industrial process control systems, the TZX13C-TAP can help to ensure reliable power system operation by stabilizing the supply voltage and controlling the resulting current flow. It can also protect against overvoltage and undervoltage transients, preventing damage to system circuits and components.

In computer motherboards, the TZX13C-TAP can help to reduce the risk of damage from overheating by providing effective thermal protection. Its low power-dissipation also helps to improve overall system efficiency and reliability.

In domestic appliances, the TZX13C-TAP can help to protect sensitive components from voltage surges while also providing effective over-temperature protection. This helps to increase the lifespan of the appliance, reducing its overall running costs.

Conclusion

The TZX13C-TAP is a highly versatile and reliable Zener diode that can be used in a wide range of applications, from industrial process control systems to domestic appliances. It features a Zener diode-based reverse biasing effect and an integrated PTC thermistor for improved over-temperature protection, as well as low power dissipation and excellent surge protection capabilities. This makes it a great choice for those seeking reliable protection from overvoltage and over-temperature events.

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