TV04A300JB-G Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are specialty semiconductor components similar to normal reverse-biased zener diodes. They operating in a similar fashion, in that they restrain the voltage from going higher than a specific, preset value. On the other hand, they are also designed to handle much larger surge currents, and can effectively protect against electrostatic discharge (ESD) and lightning strike.

TV04A300JB-G is a 600W bidirectional transient voltage suppressor (TVS). It is designed using state-of-the-art technology with very tight parameters to protect against transient surges. It is a surface mount (SMD / SMT) device with a SOD-323 package body, and performs well in very low capacitance.

Application

TV04A300JB-G is suitable for EMC / EMI applications. It can effectively reduce the impact caused by transients. Due to its wide voltage range, it can be used in various places like power supply designs, audio / video circuits and other places where adequate protection is needed. Furthermore, it can also be found in application such as general circuit protection, cell phone chargers, laptop adapters, and other consumer electronics.

Working Principle

The TV04A300JB-G works on the canonical principle of avalanche breakdown. It consists of a two-terminal, reverse biased PN junction. With the properties of the higher reverse breakdown voltage, it can protect the equipments or circuits against transient spikes or surges in the voltage. It can be used in various service environments such as Telecom, Automobiles, Industrial and also in different equipment or circuit applications of power supply.

When the voltage across TV04A300JB-G increases beyond the specified reverse breakdown voltage, current begins to flow rapidly and increases from its initial level to its peak value. During this time, the energy stored in the PN junction is partially converted into heat, resulting in increased temperatures at the device junction. This energy is dissipated in the environment, preventing further buildup of surge voltages.

This transient voltage suppressor device also helps in removing noise signals effectively, improves the lifetime of the system, and adheres to ESD standards. Compared to conventional zener diodes, TV04A300JB-G has much higher electrical dissipation capacity which enables it to reduce transient voltages more effectively.

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