SMBJ100

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SMBJ100: Application Field and Working Principle

The SMBJ100 is a V-I transient voltage suppressor diode with monolithic structure and bi-directional polarity, designed specifically to increase the level of protection for today’s and tomorrow’s high-speed and high-density electrical/electronic devices and systems. It is most commonly used as a transient voltage suppressor in a wide range of general and industrial electronic applications, from communication and networking systems to automotive and other applications.

Industries using SMBJ100

The SMBJ100 is a versatile and widely used diode and is a favorite in a multitude of industries, including automotive, consumer electronics, medical, industrial, power systems, and communications. It is widely used in automobiles, such as in motor control units and car stereos, mobile phones and handheld devices, audio-visual systems, high-definition displays, home/building automation systems, IOT applications, and other high-power LED lighting applications.

How does it work?

The SMBJ100 is a bi-directional, monolithic device with two separate, symmetrical P-type regions connected by an N-type region. It is designed to help protect electrical and electronic devices from damaging voltage transients (surges) and current-based events. In normal operation (without any transients), the diode’s P-type regions have voltage levels of 5V and -5V and the N-type region has a voltage level of 0V. When a transient occurs, the diode conducts to protect against the voltage levels from exceeding the diode’s breakdown voltage, which is usually specified as the Peak Pulse Power dissipation (PPP).

Benefits of using SMBJ100

The SMBJ100 is an ideal choice for various applications because of its low reverse leakage current, low capacitance, low reverse recovery current, and high energy absorption capability. The SMBJ100 offers excellent over-voltage protection for the various circuits inside the device due to its ability to withstand high surge voltages. Furthermore, the SMBJ100’s bi-directional capability allows it to provide protection on both the positive and negative voltage rails. Additionally, the SMBJ100 is designed to dissipate significantly lower power than other diode types, resulting in a longer life and more reliable operation.

Conclusion

The SMBJ100 is a popular choice for numerous applications due to its wide range of benefits and features. It is a versatile and efficient diode that provides effective over-voltage protection for various circuits and systems. The SMBJ100’s bi-directional capability and its low capacitance and power consumption make it a great choice for protecting modern high-speed and high-density electrical/electronic devices and systems.

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