SMBJ22A R5G Circuit Protection

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Transient voltage suppressor (TVS) diodes are small electronic components used in electrical circuits. They are designed to protect sensitive electronic devices against damage caused by voltage spikes. The SMBJ22A R5G is a type of TVS diode that is used in a wide range of applications. This article will discuss the application field and working principle of the SMBJ22A R5G.

The SMBJ22A R5G is a bilaterally symmetrical, bidirectional TVS diode designed for use in a variety of applications. It is a surface-mount device consisting of two junction breakdown diodes connected back-to-back. This design allows it to effectively protect components from both ESD strikes and voltage transients caused by inductive loads, lightning strikes, or equipment malfunctions. The SMBJ22A R5G can handle peak pulse current of up to 262A (8/20μs waveform) and can operate within a voltage range of 5V to 370V. It is an ideal component for protecting against electrostatic discharge in sensitive electrical circuits.

The SMBJ22A R5G is widely used to protect important components in a variety of electronic devices. It is often used in consumer electronics, like PCs and laptops, as well as in industrial applications such as factory automation and railroad systems. It can also be used in medical equipment, battery systems and motor control systems.

The working principle of the SMBJ22A R5G is based on the fact that it has two junction breakdown diodes connected back-to-back. When an over-voltage spike is applied to the diode, a large current flows through the device, creating a voltage drop across the device and protecting attached components. In this way, the SMBJ22A R5G acts as a voltage clamp, limiting the voltage across the protected components to a safe level and thus preventing damage.

In conclusion, the SMBJ22A R5G is a type of bilaterally symmetrical, bidirectional TVS diode. It is used in a wide range of applications and can handle peak pulse currents of up to 262A (8/20μs waveform). It is suited to protecting components from voltage transients and ESD strikes. The device works by creating a voltage drop across the diode, limiting the voltage across the protected components to a safe level and thus preventing damage.

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