VDRH07K275TME

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TVS (Transient Voltage Suppressors) are commonly used in today\'s electrical equipment in order to protect vulnerable components from electrical spikes. These devices are essential for protecting circuits from damage due to excess voltage caused by lightning or a power surge. Varistors, metal-oxide varistors (MOVs), and circuit breakers are all part of the same family of devices, which fall under the umbrella of TVS.

The VDRH07K275TME is a 2-terminal metal-oxide varistor that provides protection from high voltage transients. A varistor is a passive device that works by limiting the voltage across a circuit, in order to protect the components from potential damage. The VDRH07K275TME is rated for a maximum working voltage of 275V AC/DC and a clamping voltage of 419V, with a maximum surge energy of 440 Joules.

The main application fields for the VDRH07K275TME are in any circuit that requires protection from transient voltage and overvoltage, such as power supplies, consumer electronics, communication systems, automotive electrics, and industrial control systems. The device can be used to protect both digital and analog circuits, as well as to isolate DC/DC converters.

The working principle of the VDRH07K275TME is relatively simple, and is based on the principle of electrical breakdown. When the voltage across a varistor exceeds a certain breakdown voltage, it conducts current, and can absorb the excess energy from the voltage spike. The varistor then acts as a voltage clamp, limiting the voltage to the breakdown voltage.

The VDRH07K275TME is structured with a multi-layer zinc-oxide ceramic, and has two terminals for connection to the circuit. The device acts as a bidirectional protection, so it can protect the circuit from both positive and negative spikes. The device is also designed with a three-fold protection system, with a thermal shutdown, a current limiting resistor, and an overcurrent protection.

In summary, the VDRH07K275TME is a 2-terminal metal-oxide varistor designed to protect sensitive electronic components from high-voltage transients such as lightning and power surges. It has a maximum working voltage of 275V AC/DC and a clamping voltage of 419V, with a maximum surge energy of 440 Joules. The device has many applications in fields such as power supplies, consumer electronics, communication systems, automotive electrics, and industrial control systems.

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