VE09M01150K

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Varistors, or Voltage Dependent Resistors (VDRs), are two-terminal, nonlinear, semiconductor devices used in various electrical applications. Typically, they are used in surge protection circuits, either alone or in combination with Metal Oxide Varistors (MOVs). The VE09M015K is a type of Varistor, designed for use in AC mains high voltage protection circuits, and is available in a variety of voltage ratings.

The main purpose of a Varistor is to protect against overvoltage transients occurring in the electrical power distribution system. These spikes in voltage can cause damage to a variety of sensitive electronic components, including integrated circuits, transistors, and other semiconductor devices. By clipping the spike in voltage, a Varistor can reduce the chances of damage to the circuits, and significantly improve the reliability of the system.

In the case of the VE09M015K, the device consists of a ceramic body containing a zinc oxide semiconductor material that exhibits a non-linear resistance that is dependent upon the voltage. The Varistor can be operated up to 600V, breaking down at about 830V and dissipating a maximum power of 10.5W. The maximum leakage current is rated at 45mA at 500V and 120mA at 250V.

When an external voltage signal is applied, the Varistor will increase its resistance as the voltage climbs, thereby reducing the amount of current that flows through it. This resistance increase is immediate and will typically reduce the applied voltage to a safe level. The Varistor is an ideal device for protecting sensitive electronic components from overvoltage transients.

When used in combination with an MOV, the Varistor can provide additional protection. The MOV is a temperature sensitive device that actively absorbs shunt or high energy surges, and the Varistor is used to clip lower energy transients or spikes in voltage. As the MOV dissipates the surge, the Varistor reduces the voltage to a safe level.

The VE09M015K Varistor is available in various sizes and voltage ratings, and is typically used in a wide range of AC mains power protection circuits. It is an ideal device for reducing the hazard posed by overvoltage transients, and can provide additional protection when used in combination with an MOV.

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