ROV14-511K-S

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TVS (Transient Voltage Suppression) devices are designed to provide protection for electronic systems against over-voltage transients or electrical surge, and are typically used in the automotive and consumer electronics applications. One such device is the ROV14-511K-S, which belongs to a family of Varistor (Voltage Dependent Resistor) MOVs (Metal Oxide Varistors).

Varistors are basically three-terminal non-linear voltage-dependent resistors, which feature a series of semiconductor layers that contain zinc oxide grain boundaries embedded in a ceramic material. When exposed to an electrical surge, such as an Electrostatic Discharge (ESD) or Lightning Strike, the device begins to conduct current, thus limiting the voltage to a predetermined level. The ROV14-511K-S uses this principle to provide overvoltage protection in automotive and consumer electronics applications.

The ROV14-511K-S is a four-terminal MOV device with an integrated Low Voltage Disconnect (LVD) feature. The device has four leads, including a Gate lead (line side) and a Source lead (ground side) to control the conductive state of the MOV, two Varistor leads for electrical connection, and a thermal disconnect lead. The Gate lead is used to control the on/off state of the device, and the Varistor leads are used to limit the voltage to a predetermined level.

When a voltage surge is present, the Varistor leads begin to conduct current. This causes the Varistor to increase its resistance until the voltage is limited to the predetermined level. Once the voltage has been limited, the device then automatically enters the off-state, stopping the current flow. Upon removing the surge, the device returns to the idle state and resumes normal operation.

The ROV14-511K-S also has an integrated LVD feature, which allows the device to disconnect itself from the power source when a predetermined voltage level is exceeded. This feature is useful in automotive applications, as it allows the device to automatically disconnect itself from the power source when a voltage surge occurs, thus preventing further damage to the system.

In conclusion, the ROV14-511K-S is a four-terminal MOV device specifically designed to provide overvoltage protection in automotive and consumer electronics applications. The device is equipped with an integrated LVD feature and has the ability to limit voltage to a predetermined level, thus preventing further damages to the system. The device is a valuable addition to any protective circuit, and can help to ensure the safety and reliability of any power system.

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