VDRH07K175ALE

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VDRH07K175ALE is an electronic component or device in the transient voltage surge suppression (TVS) family, along with MOVs and varistors. Specifically, it is a metal oxide varistor, also known as a MOV, that is rated for a nominal peak current of 17.5A (Ipp), is electromagnetic interference (EMI) filter-compliant, and can withstand a maximum atmospheric voltage of 7kilovolts (KV). This makes it suitable for use in high-voltage and high-current applications, particularly those that require EMI filtering.

A varistor is a two-terminal electrical component consisting of a high-resistance semiconductor material. It works by creating a non-linear piecewise-linear junction between the terminals, which, when connected to a circuit, will limit the amount of current passed through it and form a voltage-dependent resistor. This means that, depending on the amount of voltage across the terminals, the resistance of the varistor will increase or decrease at certain threshold voltages. This feature of the device makes it very useful for transient suppressions, as it can absorb high-voltage spikes and return the circuit to its original voltage state shortly afterwards.

The working principle of a varistor is based on the fact that, when a current passes through it, some of the electrons in the semiconductor material become trapped in a higher energy state, known as a “trap”. When the voltage across the terminals of the device increases, the trapped electrons become excited and can move between the “traps” and the emitting terminals. This movement of the electrons causes a change in the resistance of the device, resulting in the voltage being switched off or the current being switched off. This is known as the varistor effect.

The VDRH07K175ALE is uniquely suited for use in transient voltage suppression applications due to its high-voltage and high-current rating. In addition, due to its EMI filter-compliant feature, it is suitable for use in applications which require EMI filtering, such as audio and data communication systems. In these instances, the VDRH07K175ALE can help increase the reliability of the system by ensuring that the flow of data is not interrupted due to transient voltage spikes.

Overall, the VDRH07K175ALE is an excellent device for high-voltage, high-current transient voltage suppression applications, particularly those that require EMI filtering. Its unique combination of high-voltage and high-current ratings, along with its EMI filter compliance make it an ideal choice for a wide range of applications.

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