V18MLE0805H Circuit Protection

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TVS, or transient voltage suppressors, are semiconductor devices that protect circuits from over-voltage or electrostatic discharge from the outside environment. Varistors and MOVs, or metal oxide varistors, are just two types of TVS. The V18MLE0805H is a varistor that can be used for transient voltage protection applications in a variety of different industries. Here we will discuss the application field and working principle of the V18MLE0805H.

The V18MLE0805H varistor is designed for transient voltage protection applications. It is available in various sizes and different breakdown voltages ranging from 6V to 500V. The device can be used in a wide variety of industries, including automotive, industrial automation, aerospace, medical, renewable energy, and telecommunications. The device is most commonly used for protection of equipment, such as power supplies, motors, and communication lines, against transient over-voltages caused by power disturbances, switching of other loads, and electrostatic discharges.

The V18MLE0805H has a unique ceramic construction that provides excellent surge protection. It has a high insulation electricity strength of 5kV, a fast response time of 5ns, and a low leakage current of 1μA. Additionally, the device has a high thermal cycling capability, meaning it is capable of withstanding temperature variations between -55°C and 175°C. The V18MLE0805H is also RoHS and REACH compliant.

In most TVS, including the V18MLE0805H varistor, the working principle is based on the ability of a varistor to vary its resistance in response to a change in the applied voltage. This phenomenon is known as the ‘Internal Potential Controlling Method’ or IPCM. The varistor is composed of two different semiconductors, a positive one and a negative one. When a transient voltage is applied across the varistor, it produces an electric field across the semiconductors, causing a shift in the majority and minority carriers. This shift causes the varistor to conduct electricity, which decreases the resistance of the device. The amount of current that the varistor can pass is dependent on the applied voltage and the device’s rating.

In conclusion, the V18MLE0805H is a varistor that can be used for transient voltage protection applications in a variety of industries. It has a unique ceramic construction that provides excellent surge protection and has a high insulation electricity strength, fast response time, and low leakage current. Additionally, the working principle of the V18MLE0805H is based on the IPCM, which allows the varistor to adjust its resistance in response to a change in the applied voltage. The device is a cost-effective solution for applications that require reliable transient voltage protection.

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