ROV05H101K-S

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Transient voltage suppressor (TVS) devices help protect circuitry from damage due to transient voltage spikes, or overloads. Varistors, also known as metal oxide varistors (MOVs), are one type of TVS. They provide protection from electrical transients such as ESD, surges, and other voltage spikes. ROV05H101K-S is one of varistors that offers robust protection against ESD and other voltage transients. This article will discuss the application field and working principle of ROV05H101K-S.

Application Field

ROV05H101K-S varistors are mainly used in mobile phones, charging systems, and other electronic applications. It is an ideal solution for applications where the system needs to be protected from transient voltage spikes and other electrical overloads. In addition, it is suitable for use in space-constrained applications with tight voltage tolerance requirements. The device not only provides robust ESD protection but also offers good overvoltage protection.

Working Principle

ROV05H101K-S is a nonlinear, voltage-dependent, resistive device. It works by clamping voltage spikes and limiting the fast transients within the specified operating voltage range. This is achieved by using a combination of positive temperature coefficient (PTC) and non-linear ceramic components. When there is sharp transient voltage, the varistor will actively absorb the magnitude of the voltage surge and clamp it so that the voltage spike is prevented from reaching the protected circuit. This helps to prevent electrical damage caused by transients.

When the transient voltage is greater than the varistor’s breakdown voltage, the varistor will experience a highly non-linear voltage-current characteristic, meaning that the current passes through the device\'s conduction mechanism. This will result in a rapid rise in the temperature of the varistor and allow a large amount of energy to be dissipated. This helps to clamp the transient voltage to its rated working voltage and preventing damage to the protected system.

In addition, the device also offers surge protection from other sources such as EMI, induced ESD, and harmful ions. The device can also provide excellent ESD protection, with up to ±25 kV contact and ±30 kV air discharge ratings. This helps to protect sensitive circuits from harmful ESD.

Conclusion

ROV05H101K-S varistors offer robust protection for sensitive electronic circuits from transient voltage spikes and overloads. This is achieved by a combination of positive temperature coefficient and non-linear ceramic components. It is suitable for use in space-constrained applications with tight voltage tolerance requirements. In addition, it also provides excellent ESD protection with up to ±30 kV air discharge ratings.

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