ATV30C191JB-HF Circuit Protection

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The ATV30C191JB-HF is a high quality transient voltage suppressor (TVS) diode designed to protect against voltage surges. It has a wide working temperature range of -40°C to +125°C and is also designed to withstand ESD and other transient stresses. In this article, we will look at the application field and working principle of the ATV30C191JB-HF.

Applications

The ATV30C191JB-HF is designed primarily for telecom and network infrastructure protection. It is suitable for protecting the signal pins of USB 2.0 ports, Ethernet ports, and other electronic components from damage due to electrostatic discharge (ESD) and other transient events. This makes it ideal for use in industrial and military environments, where ESD and other transient threats are common.

It is also suitable for protecting against transient voltage surges such as lighting. The ATV30C191JB-HF can withstand up to 100 Amps of peak current surge, making it suitable for protecting against medium-range voltage surges. This makes it an ideal choice for high power, large networks and telecom systems, as well as surge protection for other sensitive electronic components.

Working Principle

The ATV30C191JB-HF works by clamping the voltage on its working pins. When a transient voltage surge, such as an ESD event, is detected on the pins, the device will immediately react by clamping the voltage on the pins to a safe level (usually 5v). This prevents the voltage from rising beyond the device’s clamping threshold, thus protecting the connected electronic components from damage due to electrostatic discharge (ESD) or other transient events.

The device also works by dissipating the energy from the transient voltage surge. This is achieved by using a Zener diode within the device. When a voltage surge is detected on the pins, the energy will be diverted through the Zener diode, allowing the voltage to be safely dissipated. This helps protect the connected components from voltage spikes and surges.

Conclusion

The ATV30C191JB-HF is a high quality transient voltage suppressor (TVS) diode designed to protect against voltage surges. It is suitable for telecom and network infrastructure protection as well as industrial and military environments, where ESD and other transient threats are common. The device is also suitable for protecting against transient voltage surges such as lighting and can withstand up to 100 Amps of peak current surge. Finally, the device works by clamping the voltage on its working pins and dissipating the energy of the transient voltage surge by using a Zener diode.

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