ROV10H821K-2

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Varistors belong to a class of Voltage-dependent Sensitive Components, which also includes Metal Oxide Varistors (MOVs), Silicon Controlled Rectifiers (SCRs), Radio Frequency Relays (RF Relays), Zener Diodes, and Transaktors. Varistors, or Voltage Dependent Resistor (VDR) products, are designed as a surge protection device, typically used in power supplies to offer circuit protection from transient overvoltage events. Varistors are commonly termed a Transient Voltage Suppressor (TVS).

The ROV10H821K-2 is a surge protection device which can protect against transient overvoltage in high power and across the line applications. This product is a Varistor, and therefore falls within the voltage-dependent sensitive components which is classified as a TVS. This varistor is composed of a series of zener diodes and ceramic elements which work together to protect circuits against high voltage transient events.

When there is a transient voltage surge, the device will dissipate energy rather than redirect it like other components, by the electrostatic induction that creates a reduced charging path resistance. The voltage sensitive behavior allows the ROV10H821K-2 to work quickly and effectively when a surge occurs. It has a clamping voltage rating of 1100V, and a maximum let through voltage of 800V. The maximum energy the varistor is able to absorb is 2.6 Joules (J). It has an operating temperature range of -40°C to 85°C, and can withstand transients of up to 1500V with a total energy of approximately 8J.

Th ROV10H821K-2 works as a voltage-dependent resistor. It has a high resistance under normal conditions, but when the voltage exceeds its rated transient voltage, the resistance drops. This drop in resistance hence limits the amount of energy that can be sent through the circuit. It has a response time of less than 1 nanosecond, which makes it useful for lightning protection.

Generally, the ROV10H821K-2 is used in applications that may see transient voltage events, such as power supplies, telecoms, solar, wind, charging stations, lighting, computers, medical, and personal electronics. It provides a highly reliable protection for circuits and components against overvoltage transients. Therefore, it is ideal for high-end power applications.

In summary, the ROV10H821K-2 is a voltage-dependent resistor which falls within the TVS category of voltage-dependent sensitive components. It works by dissipating the energy of a transient voltage surge and has a fast response time of less than 1 nanosecond. It has a maximum peak voltage of 800V and a maximum energy of 2.6J. It is primarily used for to protect against transient overvoltage across a range of high-end power applications.

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