ERZ-U21JP162F

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Transient Voltage Surges (TVS) devices and Metal Oxide Varistors (MOVs) are designed to protect electrical devices from high-voltage, sudden increases, and can protect from lightning strikes, power outages, operator errors, and even back-feeding. TVS devices and MOVs vary in size, shape, and capability, but they both absorb and dissipate the energy of a high electric surge in order to prevent further damage to the device. This article will discuss the application field and working principle of the ERZ-U21JP162F device.

The ERZ-U21JP162F is a unidirectional, ultra-low capacitance transient voltage surge suppressor designed to protect sensitive digital devices from voltage transients. It is engineered with a clamping voltage rating of 19.6V and can absorb transient energy up to 100 Watts (10/1000 µs) for a single channel. This TVS device also features a very low capacitance of 0.08 pF, making it an ideal choice for applications requiring high speed data transmission, such as USB 3.0 and Ethernet.

The ERZ-U21JP162F device features an electrostatic discharge (ESD) rating of 18 kV, meaning that this device is capable of shielding sensitive components from voltage transients exceeding the rating in up to 18 kV of electrical noise. In order to achieve such high protection, this device is composed of 4 capacitors, each of which absorbs a different frequency of electrical noise. The capacitors work in tandem by providing high impedance to low-frequency noise while allowing high-frequency noise to pass through. This combination of components ensures that the device is fully capable of protecting sensitive components.

In order to understand the working principle of the ERZ-U21JP162F, it is important to first understand the concept of breakdown voltage. Breakdown voltage is a measure of the voltage at which a material starts to conduct electricity. In the case of a TVS, this is the voltage at which the device begins to absorb the energy of a sudden increase in voltage. The ERZ-U21JP162F has a built-in, bidirectional zener diode which is designed to absorb any voltage transients which exceed the threshold of 19.6V. The absorption of the energy in this way eliminates the transient altogether, preventing it from damaging the device it is meant to protect.

The ERZ-U21JP162F is ideally suited for use in applications requiring both low capacitance and ultra-low clamping voltage, such as Ethernet and USB 3.0. Additionally, this device is capable of protecting devices from electrical noise exceeding 18 kV in strength, making it ideal for applications exposed to extreme electromagnetic interference (EMI). The combination of features makes the ERZ-U21JP162F an ideal choice for applications requiring reliable protection from high-voltage, sudden increases and electrostatic discharge.

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