ERZ-V05D391 Circuit Protection

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ERZ-V05D391 is one of the key products of TVS - Varistors, MOVs. This application is mainly designed for surge protection and lightning protection. It has compact structure and light weight, it can match different circuit boards, and it has better electrical performance. It is widely used in digital systems, power circuit and communication field.

The working principle of the ERZ-V05D391 is based on Miller Process. It uses Miller Coefficient to reduce the surge current. The Miller Coefficient equation determines the resistance of the varistor when there is a surge current running through it. Different varistors need to be subject to different Miller Coefficients, depending on the current situation and the ideal protection. For this product, the Miller Coefficient is large enough to maintain the current in the circuit and reduce the peak values.

On the physical structure, it is composed of two electrodes, a glass tungsten copper (GTC) layer and a white varistor ceramic layer (referred to as “V” and “C”). The inner side of GTC layer is covered with silver paste, which is a very good conductive material, and it can reduce the voltage spikes generated by the current surge. The varistor ceramic layer can reduce the voltage difference between two points, making the current flow safely and stably. In addition, the two electrodes are encapsulated in a plastic envelope as the housing of the varistor.The plastic envelope has a strong flame retardant effect and can withstand a certain temperature environment. It also has excellent long-term stability.

The ERZ-V05D391 application field is quite wide, such as used in medical equipment, computing system, air conditioning systems and telecommunications systems. It can effectively prevent the occurrence of over-voltage and over-current, thus avoiding dangerous situations and guarantee safe and reliable operation of the system. This product also can be used in lightning protection of power grid, power system, digital control system, internet of things, solar PV, etc. Meanwhile, the overload and short circuit protection capability of this product provides an effective guarantee to the power grid, telecommunication, and industrial control system.

In all, the ERZ-V05D391 is a kind of protection device with high performance, wide application field, compact structure and lightweight. It conforms to the basic standards of UL and CSA. Its excellent performance, combined with its powerful applications, guarantee a safer power system. It is definitely a good choice for lightning protection solutions.

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