V68ZA2P Circuit Protection

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TVS (transient voltage suppressor) surge arresters are designed to protect electronic systems from very high static and transient voltage surges, such as lightning strikes or line switching transients. They consist of a metal oxide resistor, nonlinear semiconductor, varistor, MOV (metal oxide varistor) and other components. The V68ZA2P is a varistor manufactured by Vishay Intertechnology specially designed for high energy applications, such as lightning protection and surge protection.

The V68ZA2P is a SURFACE MOUNT 28 V Metal Oxide Varistor (MOV) specifically designed to protect Electronic Control Units (ECUs) from external lightning, electromagnetic interference (EMI), and electrostatic discharge (ESD) events. It is highly suitable for use in automotive, industrial, and consumer electronics applications. It is a surface mount component that has a symmetrical design, meaning it offers equal protection to both positive and negative input. Thanks to its asymmetrical design, it successfully eliminates conducted and radiated EMI noise, making it suitable for use with sensitive electronic components.

The V68ZA2P is mainly composed of a zinc oxide ceramic element. It is a three-layer component consisting of an upper layer, a middle layer, and a lower layer. The upper and lower layers are the electrodes while the middle layer is composed of a nonlinear semiconductor material. It acts as a bridge between the two electrodes, enabling a current to flow and ensuring the component remains in its nominal resistance range.

It works by absorbing the energy of the transient surge in the form of heat. The varistor begins to conduct electricity once an over-voltage limit between the two electrodes is exceeded and a current spike is detected. As the current passes through the device, the energy is dissipated in the form of a heat, stabilising the voltage in the circuit and creating a soft-clipping effect. The soft-clipping effect ensures that the voltage eventually returns to its nominal range after the transient event.

The V68ZA2P is designed to ensure an extremely high-energy surge discharge capability as well as a long surge life of more than 10,000 surges. This ensures the product meets a wide variety of application requirements, such as automotive and industrial. It also offers excellent electromagnetic and electrostatic protection, which make it ideal for use in environments with high levels of electromagnetic and electrical disturbances.

The V68ZA2P has a voltage rating of 28 V, a capacitance range of 65 to 400 pF, and a current rating of 20 A. It is also RoHS compliant and environmentally friendly. Its low inner resistance and excellent dielectric properties make it highly reliable and robust in harsh environments.

In conclusion, the V68ZA2P is an ideal solution for automotive, industrial, and consumer electronics applications that require transient and surge protection. It is designed with a symmetrical construction to provide equally distributed EMI interference protection. Additionally, its high surge life and low inner resistance make it a reliable and robust solution.

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