ATV30C480JB-HF Circuit Protection

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Transient Voltage Suppressors (TVS) are devices used to protect electronic equipment from damage due to voltage spikes. They typically clamp or regulate the voltage by quickly diverting current away from sensitive components. The ATV30C480JB-HF is a surface mount TVS Diode (SMD) designed specifically for use in automotive-grade applications such as automotive buses, node-to-node communication, and telematics. In this article, we will discuss the application field and working principle behind the ATV30C480JB-HF.

Application Field of ATV30C480JB-HF

The ATV30C480JB-HF is a 30V SMD TVS Diode, designed for automotive applications where EMI/RFI immunity is needed. It is an ideal solution for high-speed CAN and LIN bus applications, as its design offers up to 10dB EMI protection. It also features a fast response time of <10ns and low power consumption. In addition, it has a reverse stand-off voltage of 18V, making it well suited for multiple node systems. As it is a surface mount device, it can be used for PCB mounting without the need for additional circuitry.

Additionally, the ATV30C480JB-HF boasts a high temperature rating of –55°C to +150°C, making it an excellent choice for automotive applications. Furthermore, its robust design is said to be capable of withstanding more than 200kV of ESD (electrostatic discharge) protection in accordance with IEC 61000-4-2, making it one of the best products for automotive-grade EMI/RFI protection.

Working Principle of the ATV30C480JB-HF

The ATV30C480JB-HF is a unidirectional TVS Diode, with a maximum peak pulse current rating of 4.5A. It works by clamping the voltage to a safe level when a transient voltage spike occurs, preventing the voltage from rising above the stand-off voltage. When the voltage returns to its normal level, the reverse recovery takes place, restoring the circuit to its original state. The response time of <10ns ensures that the device can respond fast enough to protect against any damage caused by the transient voltage.

The device also includes protective features such as an ESD protection and over-current protection. The ESD protection works by diverting any ESD events away from sensitive components, thus, preventing damage to the circuit. Additionally, the over-current protection works by limiting the current in the event of a short circuit, preventing any damage caused by over-heating.

Conclusion

The ATV30C480JB-HF is a highly reliable and durable TVS Diode designed for automotive-grade applications. Its high temperature rating, fast response time and up to 10dB EMI/RFI immunity make it an ideal choice for automotive buses, node-to-node communication, and telematics. Furthermore, its ESD and over-current protection features ensure the device can easily withstand a voltage spike without causing any damage to the circuit.

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