DZ5J068D0R Circuit Protection

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TVS - Diodes, also known as transient-voltage-suppressor diodes, is specially designed to protect sensitive electronics from voltage surges, electrostatic discharges, and other electrical overstress events. These components are commonly used in applications such as automotive, telecom, industrial equipment, and consumer electronics. The DZ5J068D0R, in particular, is a member of the DZ family of TVS-diode array components from the manufacturer Diodes Incorporated. This article will discuss the specific application field and working principle of the DZ5J068D0R.

Application Field

The DZ5J068D0R is a bidirectional TVS-diode array component with 15 bi-directional diodes in a single package, making it ideal for use in automotive, industrial, and telecom applications where ease of board design and component count are important. It offers surge protection for up to 68 volts, with a low operating voltage of 6.8 volts. Its low operating voltage is suitable for many device platforms, making it an excellent choice in wide range of applications.

The component is ideal for high-side transient voltage and overvoltage protection in systems where the power supply is one higher than the maximum operating voltage. It can be used in a 12V system to absorb a variety of transients from 12V up to 68V, helping to ensure that the system remains safe and reliable. The component is also suitable for overvoltage protection in a low-side buck converter.

In addition, the component can offer protection from electrostatic discharge (ESD). This popular form of protection is common in telecom applications where the ESD pulses created during contact and other environmental conditions can cause damage to sensitive circuits. The component will absorb these ESD pulses before they reach the functioning electronics. ESD protection requires a low breakdown voltage while maintaining short response time, and the DZ5J068D0R is well suited to this task.

Working Principle

The DZ5J068D0R works by employing a metal oxide varistor (MOV). Essentially, the MOV is a multilayer ceramic structure that contains a number of varistors in parallel. When a voltage greater than the MOV’s nominal voltage is applied, the MOV operates as a resistance and starts to divert current away from the sensitive on-board electronics, thus protecting them from the voltage surge. This process is instantaneous and results in a very fast response time.

The component also utilizes axial-leaded Zener diodes as part of its design. These diodes will start to conduct when a certain reverse breakdown voltage is reached, resulting in a breakdown of the total voltage. This process helps to protect the device from voltages exceeding 68V. The axial-leaded Zener diodes also allow the total voltage to be maintained at a safe level, since they are not enabled until the voltage reaches a certain predetermined level.

This versatile component is suitable for a variety of different application requirements due to its expansive voltage range and advanced design. Whether it is combating overvoltage or electrostatic discharge conditions, the DZ5J068D0R is an excellent solution for protecting sensitive electronics from various sources of electrical distress.

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