CDSOT23-SR208 Circuit Protection

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TVS diodes, or transient voltage suppression (TVS) diodes, are a class of diode that are used for protection against voltage transients such as electrostatic discharge (ESD) and other power surges. The CDSOT23-SR208 is a series of TVS diodes specifically designed for ESD protection up to an eight-kV rating.

The device is composed of a pair of silicon avalanche diodes encased in an SOT-23 package. Each diode is configured with a signal diode together with a reverse parallel diode to effectively absorbed the ESD energy that would otherwise be conducted through the protected system. The CDSOT23-SR208 also features built-in ESD protection up to a fifteen-kV rating.

The CDSOT23-SR208 is typically used in applications that involve electronic equipment which is vulnerable to ESD. These include DC/DC converters, audio equipment, communication networks, and data processing systems. These types of circuits are particularly susceptible to damage from power surges, and the CDSOT23-SR208 helps to protect them by providing a low-impedance shunt to absorb the energy from the transient. The low-resistance path that is established by the CDSOT23-SR208 also helps to reduce the amount of heat that is released as a result of the transient.

The working principle of the CDSOT23-SR208 is relatively straightforward. When a voltage transient, such as ESD, occurs, the voltage across the two diodes is increased. This causes the diodes to become reversely biased, and the shunt conducts the energy from the surge, preventing it from entering the protected system or causing damage. The device is designed to absorb up to 8kV of ESD energy, providing an effective barrier to protect the vulnerable electronic circuits.

The CDSOT23-SR208 is a simple but effective solution for protecting electronic equipment from the damaging effects of voltage transients such as ESD. Its low-resistance shunt helps to protect against power surges with minimal disruption to the circuit, and its built-in fifteen-kV ESD protection makes it suitable for a wide range of applications.

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