V390MA6B

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The V390MA6B is a Varistor/ MOV (metal-oxide varistor) manufactured by Siemens Semiconductor, capable of withstanding 6ksvolts of surge. Designed for AC and DC applications, V390MA6B is a highly reliable device designed to provide surge protection for sensitive electronic circuits. It is a device that can provide protection of up to 6,000 Volts of transient voltage without significant damage to the unit.

The V390MA6B can be directly mounted to a printed circuit board. It features a glass-sealed encapsulation and salt spray test, making it resistant to environmental agents. The device provides a safe and reliable insulation with a 100KΩ insulation resistance and 1000MR insulation breakdown. This ensures that the device will remain insulated despite power fault/surge conditions, thus protecting sensitive circuitry from damage.

The working principle of the device is simple. It consists of a series of MOVs with the working voltage being adjustable. This is done by applying a reverse bias voltage to the MOVs. When the voltage across the MOVs increases, the MOVs become nonlinear, dissipating high voltage transients. This process acts like a current limiting resistor, limiting the amount of current passed through the MOVs.

When applied to a circuit, V390MA6B is connected in parallel with the circuit board. This allows the device to provide the surge protection by providing a path for the transient voltage to dissipate. As the device is connected across the circuit, the transient voltage is discharged to the ground, thereby protecting the sensitive circuit components. It also functions as an overcurrent indicator, warning of any potential overcurrent.

V390MA6B is designed for use in a wide range of industries, including consumer electronics, industrial and automotive sectors. It can be used as a replacement for MOVs, gas discharge tubes, SIDACs and silicon protection devices. It is also suitable for use in a variety of DC and AC circuits, including AC/DC converters, UPS systems, motor control circuits and industrial electronics.

In conclusion, V390MA6B is an excellent Varistor/MOV designed to provide surge protection in a variety of AC and DC circuits. It can be used as a replacement for MOVs and other surge protection devices, protecting sensitive circuits from damage. Its adjustable working voltage and overcurrent indicator make it well suited for a range of applications.

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