SDP0720Q38CB

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TVS stands for Transient Voltage Suppressor, and Mixed Technologies are one of the most common categories of TVS. SDP0720Q38CB is a type of low capacitance and unidirectional bidirectional TVS from the Mixed Technologies group. It is primarily used for the protection of data lines against ESD, EFT, and Surge (power line) events.

The SDP0720Q38CB contains a pair of semiconductor devices specifically designed to protect data lines from electrical overstress. The protection device consists of a reverse-biased zener diode clamped across the data line and a Beta multi-layer varistor. This combination of devices provides ESD protection up to IEC 61000-4-2 Level 4 standards and EFT protection up to IEC 61000-4-4 Level 4 standards. The SDP0720Q38CB also provides Surge protection up to IEC 61000-4-5 Level 2 standards.

The working principle of SDP0720Q38CB is based on the clamping action of the Zener diodes. When an ESD pulse is applied, the Zener diode acts as a shunt, drawing the voltage down to the rated clamping voltage of 10.5V and limiting the pulse current to the maximum rating. The Beta multi-layer varistor absorbs the remaining energy and dissipates it as heat. Also, the multi-layer varistor increases the suppression of transients and increases the working range. This combination of devices ensures that the voltage across the data line is limited to the rated clamping voltage of 10.5V and the current is limited to the maximum rating of the device.

The SDP0720Q38CB is well suited for applications that require the protection of data lines from ESD, EFT, and Surge (power line) events. It provides excellent ESD and EFT protection and is capable of withstanding Surge events up to the IEC 61000-4-5 Level 2 standards. With its low capacitance of 0.3pF and low clamping voltage of 10.5V, it is an ideal solution for the protection of high-speed data lines. Moreover, the SDP0720Q38CB is RoHS compliant and AEC-Q101 qualified, making it suitable for automotive applications.

In conclusion, the SDP0720Q38CB is a low capacitance and unidirectional bidirectional TVS from the Mixed Technologies group. It is primarily used for the protection of data lines against ESD, EFT, and Surge (power line) events. The device consists of a reverse-biased Zener diode clamped across the data line and a Beta multi-layer varistor, providing excellent protection and withstanding surge events up to the IEC 61000-4-5 Level 2 standards. It is RoHS compliant and AEC-Q101 qualified, making it suitable for a wide range of applications.

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