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TVS - Diodes

Transient Voltage Suppression (TVS) Diodes are high power, solid state TVS devices and are principally used for the suppression of transient voltage surges. The SMB10J20-E3/5B is one type of TVS Diode that is used in the protection of electronic equipment from high voltage transients. Here we discuss about the application field and working principle.

Application Field

The SMB10J20-E3/5B is a unidirectional diode. It is designed to protect equipment when operating in harsh environments such as high radiation or electromagnetic interference (EMI) and lightning environments. The SMB10J20-E3/5B provides superior protection from voltage transients caused by relatively fast, high energy spikes, and its relatively flat surge waveform is ideal for inrush, spike, lightning, or ESD protection applications.

It is suitable for use in automotive systems, power supplies, communication systems, industrial control systems, data telecommunications systems as well as in any other high-voltage environment. The SMB10J20-E3/5B also offers superior EMI protection across the 2.4 – 5.85 Ghz frequency range, making it an ideal solution for Wi-Fi, Bluetooth, cellular, and other radios.

Working Principle

The SMB10J20-E3/5B TVS diode works on the principle of avalanche breakdown. When a voltage reaches the breakdown voltage of the diode, it causes an avalanche breakdown which creates a large current and reduces the voltage to a safe level. This process happens very quickly and enables the device to protect equipment from high voltage transients.

The SMB10J20-E3/5B is a unidirectional TVS and is designed to protect against a single direction of current. It is very fast to act and will clamp the voltage to a safe level in a few nanoseconds. The device will remain in the conductive state until the voltage is normalized and its forward breakover voltage is typically lower than the breakdown voltage.

The device also has an internal temperature limit that can protect against peak inverse voltage (PIV). It also has a low leakage current so that it does not interfere with normal circuit operation. The SMB10J20-E3/5B also offers superior EMI protection across the 2.4 – 5.85 Ghz frequency range making it ideal for Wi-Fi, Bluetooth, cellular, and other radios.

Conclusion

The SMB10J20-E3/5B is a unique type of TVS diode. It is designed to provide protection from high voltage transients in harsh environments. The device works on the principle of avalanche breakdown and is capable of protecting equipment against fast, high energy spikes. Additionally, the SMB10J20-E3/5B offers superior EMI protection across the 2.4 – 5.85 Ghz frequency range making it ideal for Wi-Fi, Bluetooth, cellular, and other radio applications.

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