TV04A151JB-G

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TVS (Transient Voltage Suppressor) diodes are designed as over-voltage protection devices for electronic components and excess energy absorption. TV04A151JB-G is one of the most common types of TVS diodes used in several electronic applications in order to provide a safe working environment. This application field and its working principle will be discussed below.

Application Field

TV04A151JB-G provides an effective protection against lightning surges and it is used in numerous applications in the automotive industry, in the industrial industry, and in the telecommunications industry. Specifically, it is used as an over-voltage protection in power transmissions, signal transmissions, and camera modules. It can also be used to protect the power supply, circuits, and data lines in security systems, automotive electronics, medical machines, and so on.

Working Principle

The working principle of TV04A151JB-G is based on a method called “photodiode effect”. This process involves the creation of an electric field within the device, which is able to “trigger” a breakdown voltage point when a certain level of current is applied across the diode’s electrodes. This breakdown voltage is higher than the standard, such that the over-voltage protection is able to absorb a vast amount of current, and dissipate the voltage and energy safely. This process is also known as voltage-clamping.

It is important to note that this process is dependent on two distinct factors: the breakdown voltage, and the maximum power dissipation. If the voltage drop is too low, not enough energy is being dissipated, and the device is not correctly over-voltage protected; while if the voltage drop is too high, the device may be damaged due to excessive heat generation. This is why it is extremely important to select the correct TVS diode for the application, and consider both parameters when choosing the device.

Conclusion

TV04A151JB-G is a common TVS diode used in many applications in order to provide over-voltage protection. It employs a photodiode effect which creates an electric field within the diode that triggers a breakdown voltage when it’s exposed to certain levels of current. This breakdown voltage is higher than the standard, allowing the device to safely absorb the excess energy and dissipate it. For this reason, it is important to select the correct diode for the application and to consider both the breakdown voltage and the maximum power dissipation when making the selection.

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