ERZ-E07A221CS

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Surge-protecting products are vital electrical components used to protect against voltage transients, or short-term voltage spikes. One common and widely-used surge protection device is the transil, known in the electrical engineering field as the Transient Voltage Suppressor (TVS). Aided by MOVs (Metal-Oxide Varistors) and gas discharge tubes (GDTs), a transil is able to absorb and divert surge voltages away from connected electrical components.

The ERZ-E07A221CS is a high-performance, 3.3V unidirectional transil module for use as a television set-top box (STB) and cellular repeater. This transil provides superior surge protection, a low leakage current, and electrostatic discharge (ESD) protection for up to ±15 KV. It can be configured to support current ratings from 5 mA to 3 A (with a peak reverse current of 10 A).

The ERZ-E07A221CS is designed to meet IEC 61000-4-2 and EU EMC (Electromagnetic Compatibility) emission requirements, including ESD discharges up to ±15 KV, surge immunity up to 8 kV (with I/O isolation up to 10 mA), and surge overshoot capability up to 3.3 V. The unit has a maximum weight of 7.9g and can operate between -55 ºC to 125 ºC.

The main application field for the ERZ-E07A221CS are STBs, TV receivers, portable electronics, and cellular repeaters. They can be employed to protect electronic devices from over-voltage and over-current surges, preventing expensive equipment damage.

The working principle of the ERZ-E07A221CS is based on the operation of a MOV, or metal oxide varistor. MOVs are non-linear resistance components composed of two electrodes on either side of a layer of ceramic material. When an electrical current flows through the electrodes, the voltage across the MOV will depend on the MOV\'s resistance. When a specific voltage is exceeded, the MOV will diverge from its linear resistance and quickly conduct electricity.

When the MOV is connected to a load, it acts as a protection component, absorbing most of the surge energy and diverting it away from the connected electronics. When the voltage across the MOV reaches its breakdown voltage, it will reduce the surge voltage to a safe level, thus protecting the connected components from damage.

The MOV is the main component of the ERZ-E07A221CS, and it provides voltage clamping to protect the connected components from high-voltage transients. The MOV also provides ESD protection and over-voltage protection, allowing it to operate reliably in a wide range of applications. The MOV also provides thermal protection, which limits the amount of energy it can absorb in extreme conditions.

The ERZ-E07A221CS is an effective and reliable solution for providing surge protection in a variety of applications. Its excellent surge protection, low leakage current, and ESD protection capabilities make it an excellent protection component for various devices, allowing them to operate reliably in a wide range of environments and conditions.

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