ROV05H270K-2

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TVS (Transient Voltage Suppressor) - Varistors, MOVs

ROV05H270K-2 is a TVS (Transient Voltage Suppressor) with “Varistors, MOVs.” It is widely used in consumer electronics and power systems. This type of TVS prevents damage to electronic devices from surges of power, continuous overloads, and static electricity. It is constructed to perform in electric circuits and dissipate energy when a current or voltage spike overloads the circuit.

Applications of the ROV05H270K-2 range from high resistance suppression of bias components to clamp of high-energy-transient\'s. The device is used in suppression of surge currents in power systems and telecom systems, and also used a range of consumer electronic applications. It is a widely used device in power over Ethernet (PoE) or Ethernet over Powerline (EoP) applications.

The working principle of a ROV05H270K-2 is that it consists of two zinc oxide varistors that are connected in-series. These varistors do not have normal current conduction until the voltage across them is greater than the specified clamping voltage. When an overload occurs, the varistor will conduct to reduce the effect of a high-energy surge. The resistance will increase as the voltage increases, thus protecting the system from spike current and voltage surges.

The surge current limiting capability of the ROV05H270K-2 is based on its dielectric absorption ratio. This is the ratio of the energy input to the energy output during the dissipation of a transient surge. The device can dissipate up to 50A maximum rated current and up to 260V clamping voltage.

Unlike Zener diodes, the ROV05H270K-2 utilises a voltage breakdown principle based on both resistive and capacitive current. This is what allows the device to absorb and dissipate high transient surges without the risk of over-current damage.

The ROV05H270K-2 is also designed with an internal system that reduces the possibility of false triggering. This is done by incorporating an anti-abrasion system that limits the maximum surge current to a recommended level. This system helps minimise the chances of false triggering, thus extending the operating life of the device.

Furthermore, the ROV05H270K-2 is designed to dissipate a large energy spike without damage. This ensures the safety of the circuit and users, as it can withstand up to combinations of 1000V/s rise rate and 10KV/μs peak amplitude surges.

In conclusion, the ROV05H270K-2 is a widely used type of TVS from the Varistor, MOVs. Its wide variety of applications cover consumer electronics and power systems, and its working principle combines both resistive and capacitive current ways of voltage breakdown. It uses an internal anti-abrasion system that limits the surge current to a safe level, and dissipates high energy surges without damage.

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