V385LU20CPX2855

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TVS – Varistors, MOVs are two power rail disciplines that can be used in various applications. A V385LU20CPX2855 is an example of a Varistor from the Vishay company. This device is a current-controlled device with a bidirectional off-state voltage rating of 380V AC (UL1449). The device is designed with a leadless surface mount package for placement onto circuit boards.

The application field for this type of device mainly involves circuit protection from transient electrical signals that could exceed rated power levels. This device is suitable for over-voltage protection against lightning surges, line transients, and back-emf protection. These Varistor devices can be employed in a wide variety of environments, including consumer, commercial, and industrial applications.

The working principle of the V385LU20CPX2855 comes from its ability to clamp the transient voltage that may appear on a circuit to a safe level. It works through its bidirectional off-state voltage rating of 380V AC (UL1449). When a surge in the voltage appears in a circuit, the device has a positive temperature coefficient resistor built in to it. This resistor allows for an voltage increase up to the clapping point of the device, in this case 380V AC. Once at that point, the device will begin to redirect the current which is attempting to pass through it. This redirection of current allows for the voltage to remain at or below the clapping point, thusly protecting the circuitry it is connected to.

A few of the advantages of the V385LU20CPX2855 are its long life performance, low leakage current, and low capacitance ratings. It also has a quick response time of less than 500ns to protect the circuit. Additionally, the device can withstand high working temperatures up to 85°C.

In summary, the V385LU20CPX2855 is a type of Varistor from the Vishay company that can be used to clamp transient voltage and provide circuit protection in various applications. It can be employed in consumer, commercial, and industrial applications, due to its quick response time and ability to withstand high temperatures. Overall, the device is highly effective in providing circuit protection and can be relied upon to do so in a variety of settings.

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