CPDFR5V0U Circuit Protection

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TVS-Diodes are commonly used in electronic systems for protecting sensitive components from transient voltages caused by electrostatic discharge (ESD). The CPDFR5V0U is a unidirectional voltage-dependent transient suppressor designed to protect against ESD and transients. It features a low turn-on and operating voltage, fast response time, and low capacitance. This article will discuss the application field and working principle of this component.

Application Field

CPDFR5V0U TVS Diodes are often used in digital and analog circuits where protection against ESD is essential. They are commonly used in consumer electronics such as computers, phones, and tablets, as well as industrial machinery such as robots and process control systems. The low capacitance of the device also makes it suitable for use in high-speed circuits and data networks. With a reverse stand-off voltage of 5V, the device is capable of suppressing transients up to 5V in amplitude.

Working Principle

When there is a voltage above the breakdown voltage of the CPDFR5V0U TVS Diode, the device will enter its avalanche breakdown region. In this region, carriers in the depletion layer of the diode become free due to the electric field, resulting in a large current, which is referred to as “avalanche current”. The avalanche current happens extremely quickly, allowing the device to protect electronic components from caused by ESD and transients.

When the voltage across the device is reduced to below the avalanche voltage, the device will quickly turn off due to the inherent capacitance of the device being discharged. This rapid switching gives the device its fast response time. The current rating of the device is typically limited to 150mA, but this can be increased with the addition of a series resistor if necessary.

The CPDFR5V0U TVS Diode is a highly versatile device with a wide range of applications in electronic systems. Its low operating voltage, fast response time, and low capacitance make it an ideal solution for protecting sensitive components from transient voltages caused by ESD and transients.

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