1SMB28CAT3G

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TVS - Diodes are designed to protect sensitive electronic components from high voltage surges caused by events such as lightning strikes, electrostatic discharge, and other transient voltage spikes. The 1SMB28CAT3G is a unidirectional TVS diode designed to provide a low capacitance and fast response time to suppress medium- and high-energy ESD events.

The 1SMB28CAT3G TVS diode comes in an ultra-small 0402 Package SOD-323, with low capacitance of 1.7pF and typical capacitance of 2.39pF. The maximum clamping voltage is 28V (30V for 1AMB28CAT3G) and the peak pulse current (Ipp) is 3.0A. It is soft reverse-breakdown due to the Zener breakdown principle and fast-reverse recovery design.

1SMB28CAT3G Application Fields

1SMB28CAT3G TVS Diode can be used in a variety of applications, such as telecommunications, data networks, industrial, and consumer electronics, where high voltage transients are an issue. It can protect sophisticated interfaces such as USB, HDMI, LVDS, and more, providing a reliable level of ESD protection.

It can be used to protect high-end automotive and industrial power lines, protecting critical devices from EMC and EMI interference. Furthermore, it can be used in IT applications such as PCs, workstations, and server systems, for overvoltage and ESD protection.

1SMB28CAT3G Working Principle

The 1SMB28CAT3G TVS diode works using the Zener breakdown principle. When the voltage across the diode exceeds a certain threshold value, known as the breakdown voltage, the Zener diode enters the breakdown region and a reverse current suddenly flows. This current is limited by the resistance of the diode, absorbs some of the excess voltage, and also dissipates energy.

The reverse recovery current of the 1SMB28CAT3G is regulated by a special network structure, so that a large surge in current does not occur under reverse voltage conditions. The SOD-323 package used for the TVS diode provides optimal thermal heat dissipation, allowing them to handle more current than other packages.

Conclusion

The 1SMB28CAT3G TVS diode is a unidirectional diode designed to protect sensitive electronic equipment from high voltage transients. It uses the Zener breakdown principle to suppress ESD events and other overvoltage conditions. The ultra-small 0402 package SOD-323 provides optimal thermal heat dissipation, allowing it to handle more current than other packages. It can be used in a wide variety of applications, such as automotive, industrial, consumer electronics, telecommunications, and more.

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