VE1812L501R008

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The VE1812L501R008 is a high power surface mount varistor, which is also known as transient voltage suppressor or surge protective device. It is designed mainly for protection of voltage sensitive electronic components such as power converters, integrated circuits, and other sensitive electronics. This product is essentially a component with a capacitor-like structure, which has a large number of discrete non-linear elements that offer a high voltage clamping capability over a wide operating temperature range.

The VE1812L501R008 belongs to the category of transient voltage suppressors or surge protective devices (TVS-Varistors, MOVs). It has a peak pulse power rating of 1250W (10/1000μs) and an IEC rated voltage of 501V. This device is typically used to protect circuits from high voltage peaks produced by transients and surges. It performs this function by quickly carrying the surge current to ground, preventing it from getting to the protected circuits.

The main principle behind the VE1812L501R008 is that it clamps the voltage at a predetermined level, allowing current flow until the voltage reaches this level. This is known as voltage clamping, which is basically a form of voltage limiting. Once the voltage reaches the predetermined level, the device will begin to draw more current until the voltage is reduced again. Thus, the device offers a high level of protection from over-voltage transients and surges.

The primary application field for the VE1812L501R008 is in protecting pulse type power supplies. These supplies are typically subjected to large voltage spikes caused due to lightning strikes, power lines, electrostatic discharges, and more. Without the protection of the VE1812L501R008, such power supply components could be damaged beyond repair. This device is also commonly used in automotive applications where onboard voltage supplies are subjected to transient voltage spikes.

In addition to the protection of voltage-sensitive electronic components, the VE1812L501R008 is also used for over-voltage protection of PCBs. It can be used to protect against voltage spikes in DC or AC circuits. This device has a high clamping voltage, which is typically adjustable through the incorporation of resistors. Thus, the over-voltage threshold can be set within a range to ensure optimum protection.

Overall, the VE1812L501R008 is a very versatile device that can be used for a wide range of applications. Its primary function is to provide surge protection for voltage sensitive electronic components, but it can also be used for over-voltage protection of PCBs. It provides a high level of protection, making it an ideal choice for many applications.

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