VE09M00301K

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Varistor technology is one of the latest advances in surge protection. By using a metal oxide varistor (MOV) in conjunction with a capacitor, voltage spikes can be dampened before they ever make it to sensitive electronics. These devices are becoming very popular in industrial and commercial applications. One of the more popular products is the VE09M00301K range of varistor from Vishay. In this article we will be discussing the application field and the working principle of the VE09M00301K.

The VE09M00301K is a metal oxide Varistor (MOV) with a special surface mounting tab design, utilising advanced SMD (Surface Mount Device) technologies. This device is UL recognised and has a wide range of applications. These include power line surge protection, EMI/RFI filtering, current limitation, and general overvoltage protection.

The VE09M00301K has a rated voltage of 12V and a rated peak pulse current (IPP) of 250A. The maximum clamping voltage is 17V and the energy rating is 85J. It is designed to limit transient overvoltage to safe levels which would not damage sensitive electronics. It has a high surge current rating and a low capacitance value. It also has a low temperature coefficient, ensuring that it will perform efficiently even in high temperatures. It has a high dissipation coefficient and excellent clamping capabilities.

The working principle of the VE09M00301K is the same as other varistors. When a voltage spike occurs, the MOV will absorb the energy and dissipate it while clamping the voltage to safe levels. The MOV is a nonlinear semiconductor device which has a nonlinear voltage current characteristic. At lower voltage levels, the MOV acts as an open circuit and does not allow any current to flow. However, when the voltage rises to the rated peak voltage, the MOV begins to allow some current to flow. As the voltage increases, the current flowing through the MOV also increases. This dissipates the energy from the voltage spike while also reducing the peak voltage. This ensures that delicate electronics are not damaged.

In application, the VE09M00301K is connected between the power source and the load. During normal operation, the device offers very low resistance, typically below 1 milliohm, allowing for better power transfer with minimal loss. During a voltage spike or surge, the device starts to conduct current, slowly at first, and then more rapidly. This action limits the voltage applied to the load, preventing damage to the components.

The VE09M00301K is a versatile and powerful metal oxide varistor. It has a wide variety of applications, from power line surge protection to EMI/RFI filtering. Its ability to efficiently clamp voltage spikes makes it an ideal choice for sensitive electronic systems. Its low capacitance, temperature sensitivity, and clamping capability guarantee that it will perform consistently over time. And finally, its surface mounting tab design makes it user friendly and easy to install. All these factors make the VE09M00301K an invaluable component in today’s surge protection market.

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