SMBJ180A

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The SMBJ180A is a versatile and reliable device from the TVS diode family. It is commonly used in a variety of applications, such as surge suppression, voltage clamping, and ESD protection. The SMBJ180A diode is available in three versions, including unidirectional, dual-bi-directional, and bidirectional-with-ground leads.

The unidirectional version of the SMBJ180A is the most common and versatile option available. It has two leads and is designed for one-way current flow, so that the device is capable of suppressing ESD as well as over-voltage events. It is suitable for consumer electronics, communications, industrial and other electronics applications. It has a maximum reverse leakage current of 5 mA at rated Vmax, and a minimum operating voltage of 180V.

The dual-bi-directional version of the SMBJ180A is designed to provide protection against both ESD and reverse over-voltage surges. It has three leads and supports forward-and reverse-current conduction simultaneously. It also offers protection against ESD discharges with a maximum peak pulse power of 4.5kW. The device also provides an additional ground lead which helps to distribute the surge current.

The bidirectional-with-ground version of the SMBJ180A is designed for applications where there is a need for additional grounding. This version provides additional ESD protection and reduces EMC interference. It also supports bidirectional current conduction and offers protection against reverse ESD surges with a maximum peak pulse power of 8kW. It has an operating voltage of 160V and a minimum breakdown voltage of 140V.

The SMBJ180A device is made up of several components, including a substrate and protective coating, a zener diode, a Cathode Electrolytic Nonlinear Resistor (CENLOR), and an integrated capacitive bypass. The substrate and protective coating form the base of the device and act as a barrier to protect the internal components from the external environment. The zener diode is used to limit the amount of current allowed to pass through the device. The CENLOR is used to provide additional ESD protection by providing a low-resistance path for surges to be diverted away from the sensitive components, while the integrated capacitive bypass is used to reduce EMI interference and provide additional protection against over-voltage surges.

In summary, the SMBJ180A is a versatile and reliable device from the TVS diode family. It is available in three different versions, unidirectional, dual-bi-directional, and bidirectional-with-ground leads, to meet a variety of application needs. It is suitable for surge suppression, voltage clamping, and ESD protection in consumer electronics, communications, industrial and other electronics applications. It is made up of several components, including a substrate and protective coating, a zener diode, a CENLOR, and an integrated capacitive bypass, that provide a robust and reliable ESD protection solution.

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