ROV14H201K-S-2

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TVS - Varistors, MOVs are sometimes referred to as transient voltage suppressors (TVS). These devices are designed to limit the voltage that can be applied to a circuit, or to divert high-energy surges away from sensitive components. ROV14H201K-S-2 is a typical varistor which can be adopted in a variety of situations to protect circuits from high voltage surges.

ROV14H201K-S-2 Application Field

ROV14H201K-S-2 has a wide range of applications, covering telecommunications, lighting appliances, IT equipment, consumer electronics, automotive electronics, and industrial automation. This varistor has high transient protection capabilities and can be used as the main protection device to protect against fast and large surges. It is ideal for applications that require higher surge energy ratings such as OVP (over-voltage protection) and ESD (electrostatic discharge), as well as protecting against other EMI (electromagnetic interference).

Working Principle of ROV14H201K-S-2

ROV14H201K-S-2 is a zinc-oxide based varistor. The varistor design is based on a concept commonly known as avalanche breakdown. When an AC or DC voltage is applied to the varistor, the varistor acts as a resistor with a certain resistance. However, as the voltage exceeds a certain breakdown voltage, the current in the device increases dramatically. This is because the energy of the applied voltage is sufficient to create electron-hole pairs. These free charge carriers then form a narrow region of opposite charges, which is referred to as an avalanche region. This avalanche can increase the current exponentially, with the result that the voltage across the varistor’s terminals is reduced. This steeply non-linear voltage-current characteristic is responsible for the device’s ability to actually absorb energy and limit the voltage applied to it.

ROV14H201K-S-2 is a low leakage current low voltage drop varistor that features a low resistance voltage-current curve. This means that it is able to effectively clamp and divert surge voltages, while dissipating much lower amounts of power than other varistors would. The device also features a wide operating temperature range, from –40°C to +125°C.

Conclusion

ROV14H201K-S-2 is a low leakage current low voltage drop varistor suitable for use in a wide range of applications such as telecommunications, consumer electronics, automotive electronics, and industrial automation. Its working principle is based on the concept of an avalanche breakdown which enables it to limit the voltage applied to it and absorb large surge energies.

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