ROV05H621K-S-2

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The ROV05H621K-S-2 is a surface mount metal oxide varistor (MOV) designed by Littelfuse. Also known as a transient voltage suppressor (TVS), this component’s primary purpose is to protect circuits from overvoltage occurrences, transient surges, and electrostatic discharges (ESDs). The ROV05H621K-S-2 is capable of withstanding up to 521 volts of continuous voltage and peak power ratings that reach 1750 watts. Due to its small size, this TVS can easily be incorporated into a range of diverse electrical and electronic designs.

Applications

The ROV05H621K-S-2 is suitable for use across a number of industries, particularly in automotive, industrial, and consumer electronics applications. As an excellent overvoltage protector, it is beneficial for protecting both sensitive components and electronic mainboards. Here are a few specific common applications.

• Vehicle audio systems and infotainment systems
• LED lighting
• Utility meters
• Computer mainboards and power supplies

Working Principle

The ROV05H621K-S-2 uses a metal oxide construction that tames and limits surges of current, up to a certain point. When a large electrical voltage surge undergoes a process known as deionization, it is narrowed down to a series of low-amplitude voltage pulses. These bursts of current are passed through a zinc oxide clip. The zinc oxide material absorbs the energy in the form of heat and prevents any voltage from reaching a board’s sensitive components.

When the device is exposed to higher voltages, it undergoes a process known as “avalanche breakdown,” which then transports and releases the pulse safely and efficiently. As the current passes from a metal oxide core, it dissipates into an internal shield before entering the board.

Advantages

The ROV05H621K-S-2 is an ideal overvoltage solution for a wide variety of applications due to the device’s high surge energy capability and smaller size. Some of its main advantages include:

• Fast response time
• High peak power rating
• High surge energy capability
• Smaller form factor
• High durable construction

Overall, the ROV05H621K-S-2 is an excellent and reliable protective solution designed to protect electrical circuits in harsh environments from the risks of overvoltage damage. Its high peak power rating, fast response time, and smaller design make this component a well-suited solution.

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