ROV07H221K-S

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TVS - Varistors, MOVs are types of surge protectors used to limit voltage spikes and further suppress transients from electronic components. These components are often used to protect semiconductor devices from the damaging effects of overvoltage, undershoot, or overshoot events.

The ROV07H221K-S is a specialized type of varistor that is specifically designed to be used in automotive and industrial applications. It is built using a multilayer zinc-oxide structure. These layers are laid out in two stages: the anode performs the protective role, while the cathode is used as an electrical conductor. Electrons are then collected by the two wide terminals that connect the anode and cathode to the circuit.

ROV07H221K-S devices have two main specifications: the basic operating voltage (VB) and absence of voltage (VA). The VB is the voltage at which the varistor begins to decrease its electrical resistance. VA is the voltage at which the varistor confidently operates without showing any changes in electrical resistance. A device with these two components is ideally suited for automotive and industrial applications that may involve frequent transients or power events.

The working principle of a ROV07H221K-S device is based on the principle of a diode. When a voltage pulse is applied to the device, electrons from the anode are attracted to the cathode. Once the pulse has passed, the electrons return to their original position. This process causes a resistive current, which is the basis for this type of protective device. The resistance of the ROV07H221K-S device is based on the relative distance between the anode and cathode, as well as the electrodes\' resistance to current.

The ROV07H221K-S is used to protect high-speed electronic circuits, telecommunication systems, lines and buses, audio/video systems, DC motors, automotive and industrial applications. It has a wide range of operating temperatures and is capable of suppressing transients with a maximum impulse pulse current of 30kV. It is also very lightweight, making it suitable for applications where weight is a concern.

In summary, ROV07H221K-S devices are specialized varistors that are designed for automotive and industrial applications. They use a multilayer zinc-oxide structure to increase the resistance of the device and protect against damaging voltage spikes. They are also lightweight and have a wide range of operating temperatures. Their working principle relies on the movement of electrons between anode and cathode in response to voltage pulses, which creates a resistive current.

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