TPD3E001DRYR Circuit Protection

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TVS - Diodes refer to transilent voltage suppressors, which act as clamping devices that protect electronic circuits from transient voltage incidents such as ESD or lightning strikes. The TPD3E001DRYR is a low-capacitance unidirectional transient voltage suppressor from Texas Instruments. It has a working voltage of 11 volts to 33 volts and holds a capacitance of 1.45 pF.

Application Field

The TPD3E001DRY is designed to protect downstream components that require low capacitance from external transients occurring from sources such as electrostatic discharge (ESD), overvoltage, and lightning. An example for such applications is where the DUT (Device Under Test) requires protection from ESD pulses generated in an industrial setting. This product is specified for data lines up to 6 Gbps operation, including High-Definition Multimedia Interface (HDMI), DisplayPort, USB, SATA, and Ethernet.

Working Principle

The working principle of this TVS diode is simple. When a transient event of voltage or current occurs in the external environment, the specialized structure of the TVS diode allows it to absorb these events and shorts them to ground, which in turn protects the connected electronic systems. During a normal, no-transient operation, the diode exists in its OFF state and provides no additional capacitance or impedance to the normal signal.

The TPD3E001DRYR is designed with an avalanche breakdown structure, where voltage above the rated breakdown voltage causes carriers of the valence band to be pushed into the conduction band, resulting in the release of large amount of current and dumping the voltage across the device. While this gives excellent protection against ESD transients, it also minimize transient clamping voltage by its low regulator zener breakdown voltage.

Thus, the TPD3E001DRYR is an ideal low-capacitance unidirectional transient voltage suppressor for protecting downstream components from external transients. Its low-capacitance and the high speed of transient response makes it suitable for high speed data application, and it provides excellent ESD protection in industrial settings.

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