VM474MK801R030P050

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TVS - Varistors, MOVs are most commonly used in electronic circuits for over-voltage and over-current protection of sensitive equipment. The VM474MK801R030P050, is one of these components. A VM474MK801R030P050 is specifically designed for ESD and Transient protection applications. It is designed to protect against voltage transients and electrostatic discharge (ESD) up to 150V.

The VM474MK801R030P050 is constructed of a composite of metal oxide layers. These layers form the basis of a movable contact system, which provides the main function of the device by protecting against over-voltage and over-current conditions. The contact system is comprised of four metal oxide discs, each having a specific functional purpose.

The first disc is the ground. It is connected to the ground of the system, which acts as a reference point for potential over-voltage or over-current conditions. The second disc is the Control Disc, which contains a variable resistor. This resistor is used to adjust the threshold voltage of the connected system. The third disc is the Sense Disc, which senses when the circuit voltage rises above the preset threshold level. When the voltage level reaches the threshold, the sense disc causes the transistor to open, and voltage is then diverted from the circuit path.

The fourth and final disc of the contact system is the Trigger Disc. The trigger disc is comprised of two metal oxide layers. One layer is connected to the control disc and the other layer is connected to the sense disc. When the voltage level rises above the preset threshold, the sense disc causes the trigger disc to make contact with the control disc. This contact causes the transistor to be opened, and the current is then diverted away from the circuit path.

In summary, the VM474MK801R030P050 provides ESD and Transient protection for circuits by using a composite of four metal oxide discs with a metal oxide variable resistor. It is designed to detect over-voltage and over-current conditions by using a sense disc and control disc. When it detects these conditions, it causes the transistor to be opened, which diverts the current away from the circuit path.

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