ERZ-U21JP102

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Varistors, also known as Voltage-Dependent Resistors (VDRs), are made of a semiconductor ceramic material composed of zinc oxide grains and are commonly used in industrial circuit protection applications. The ERZ-U21JP102 Varistor from TE Connectivity is a modern varistor designed for use in a wide range of applications. This article will discuss the application field and working principle of the ERZ-U21JP102.

The ERZ-U21JP102 Varistor is specifically designed to protect microelectronic circuits from damaging transients like electrostatic discharge (ESD), electrical fast transients (EFT) and lightning strikes. It is capable of handling up to 200 A short-duration surge current and is suitable for applications with nominal AC voltages ranging from 8 V to 26 V. The Varistor is available in a wide range of packages with a wide variety of surge current and voltage ratings. It is UL-approved, RoHS compliant and AEC-Q200-qualified. The term “ERZ-U21JP102” stands for the type of Zinc Oxide Varistor it is, as well as its voltage rating.

The Varistor device is constructed of a sintered ceramic mass of zinc oxide grains and is co-fired with two metallic electrodes, typically Mn63 or copper on each end. During normal operation, the zinc oxide semiconductor material has a high resistance and a small amount of current is allowed to pass through the device. However, when a high transients voltage is applied to the Varistor, the zinc oxide material suddenly reduces its resistance and the device begins to conduct. This action reduces the electrical overstress by shunting or diverting large current pulses away from sensitive electronics. When the transient voltage dissipates, the Varistor returns to its high resistance state and normal operation can resume.

In addition to its surge current and voltage ratings, the ERZ-U21JP102 Varistor also has a wide variety of features that make it suitable for a wide range of applications. For example, the Varistor features a high insulation resistance which ensures that the insulation between the varistor electrode and the application board remains intact and free of electrical leakage. The device has an operating temperature range of -40°C to +85°C, making it suitable for environments where temperature extremes are a concern. The device is also relatively small, making it suitable for applications which require a minimal board footprint. The robustness of the Varistor allows it to withstand multiple surges without degrading.

The ERZ-U21JP102 Varistor is suitable for use in many different applications where surge protection is needed. It is commonly used in consumer and industrial electronics, automotive and marine applications, medical devices, and a wide variety of other applications requiring circuit protection. The Varistor can also be used in AC line protection, phase-to-ground protection, and motor control circuits. Because of its convenience and reliability, the ERZ-U21JP102 Varistor is widely used in industrial circuit protection applications.

The ERZ-U21JP102 Varistor from TE Connectivity is a versatile device for providing transient voltage surge protection in a wide variety of applications. It features wide surge current and voltage ratings, a high insulation resistance, and a wide temperature range, making it suitable for a wide range of applications. By providing excellent surge protection and reliability, the ERZ-U21JP102 Varistor is an excellent choice for industrial circuit protection applications.

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