ROV20-391K

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TVS - Varistors, MOVs bring a significant contribution to the safety and reliability of high-voltage electrical systems. ROV20-391K is a major advance in TVS - Varistors, MOVs, and is used in many applications. This article will first explain the application fields and working principle of the ROV20-391K.

Application Field

ROV20-391K movs is primarily designed for lightning protection of surface mounting application (SMD). This SMD device is used for multiple purpose such as protect digital network equipment, cameras, monitors or laptops. It can also be applied to communications and control systems in industrial and instrumentation systems. The ROV20-391K movs offers high reliability, low capacitance and superior performance and wide operating frequency.

Working Principle

The ROV20-391K movs is a solid-state, non-linear active device with high voltage protection capabilities. It consists of a bidirectional silicon controlled rectifier (SCR)-controlled, avalanche voltage clamp. The device works by sensing the applied voltage; if the voltage exceeds the set threshold, it conducts current away from any connected components, thus providing surge current protection. It can also be used to reduce high-energy surges such as those experienced in lightning strikes.

The device is designed to absorb and redirect the extra energy produced during an incident, such as a transient or power surge. When a surge is detected, the bidirectional SCR-controlled voltage clamp is activated, forming an avalanche breakdown of the silicon junction diode. The device will then conduct current away from any connected components, thus providing surge current protection. The device can be used in series with an external circuit, with the bi-directional SCR forming the series switch.

When a surge is detected, the bidirectional SCR is activated, forming an avalanche breakdown of the silicon junction diode. A majority look-ahead voltage regulation technique is implemented to properly control the flow of current. As a result, an external current limiting device is not necessary.

Moreover, the voltage clamp feature of the ROV20-391K offers low capacitance and superior voltage protection performance for both unidirectional and bidirectional signals. The superior protection performance is obtained by an optimized clamp voltage enabling the maximum protection of the devices connected downstream.

Conclusion

In conclusion, the ROV20-391K is an ideal solution for providing surge current protection for digital equipment such as cameras, monitors, laptops, and communications and control systems. The device offers high reliability, low capacitance and superior protection performance, making it the perfect choice for high-voltage electrical systems.

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