ERZ-E08A621 Circuit Protection

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TVS - Varistors, MOVs are passive devices for providing over-voltage protection. The ERZ-E08A621 is a Varistor Type TVS made from zinc oxide. It is a multipurpose device that is used in different kinds of applications ranging from automotive electronics, industrial equipments, audio systems and communication circuits. The ERZ-E08A621 is designed for applications such as transient voltage suppressors, input-output surge absorbers, and snubbers.

Applications

The most common use for the ERZ-E08A621 is in transient voltage suppressors (TVS). It protects systems from different kinds of transients such as electrostatic discharges (ESD) and lightning strikes. The device behaves as a short-circuit when a high impulse voltage is applied to it, and thus protects circuit components from getting damaged due to over-voltages. The ERZ-E08A621 also helps in protecting against electrical overstress, and results in the prolongation of the lifetime of components.

The ERZ-E08A621 is also used in audio and communication applications, where it helps in controlling the input-output signal and filtering out disturbances. The device helps in eliminating hissing and buzzing noises from audio systems. The device is also useful in controlling transmission and reception of signals.

Working Principle

The ERZ-E08A621 works on the principle of varistor, which is a two-terminal non-linear semiconductor device. Varistor provides overvoltage protection by exhibiting a non-linear reaction to electrical stimuli. It quickly reacts to high surge currents and absorbs the surge voltage, thus protecting the equipment from the transient.

The ERZ-E08A621 has zinc oxide as its main material, which is a piezoelectric material. It has a non-linear electrical resistance which increases with increase in external voltage. When a current passes through the device, it creates an electrostatic field which increases its resistance further. This increases its protection capability and can clamp down voltages higher than the level of its breakdown voltage.

The ERZ-E08A621 also offers some other benefits like fast response time, low leakage current, and wide-range capability. The device offers protection up to a maximum peak pulse current with peak pulse widths ranging from 0.1-20 ms. The device also has a low leakage current which allows it to provide protection over a wide temperature range.

Conclusion

The ERZ-E08A621 Varistor is a versatile protection device which is widely used in many different kinds of applications. It provides overvoltage protection against transients and electrostatic discharges, and also provides audio and communication signal control. The device has low leakage current and wide-range capability, making it suitable for a variety of applications.

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