1N6119AUS Circuit Protection

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TVS (Transient Voltage Suppressor) diodes provide protection against unwanted high voltage transients, such as lightning or static discharge, that can damage sensitive electronic equipment. The 1N6119AUS is a unidirectional TVS Diode specifically designed for over voltage protection in various electronic devices.

Application Field

The 1N6119AUS is an electrostatic discharge (ESD) protection device with a simple external circuit. Its applications include protecting personal computers and communication equipment, automotive and industrial control systems, drivers, and general digital electronics. It is also suitable for applications needing ESD protection with low capacitance and fast response. Since the 1N6119AUS has an ultra-low capacitance of 0.15pF typical, it is ideal for high speed circuits, such as those found in VGA, USB, DVI, HDMI, and other high speed applications where signal integrity is essential.

Working Principle

The 1N6119AUS TVS diode works to protect a circuit from over voltage transients by rapidly increasing its voltage resistance when the voltage across the diode exceeds its breakdown voltage. When the voltage across the diode is lower than its breakdown voltage, the diode has a low resistance and is said to be in a “forward” state. Once the voltage across the diode exceeds the breakdown voltage, the diode will begin to increase its voltage resistance to a much higher value; in this “reverse” state, the diode becomes a high resistance that prevents further increase of the voltage. This change in resistance absorbs or dissipates the incoming surge voltage, thus protecting the circuit.

The 1N6119AUS has a breakdown voltage of 6.1V, a peak pulse current rating of 20A, and a clamping voltage of === 11.6V. This means that it will begin to increase its voltage resistance when the voltage across it exceeds 6.1V and clamp the voltage at a maximum of 11.6V.

Conclusion

The 1N6119 AUS is an excellent choice for a unidirectional TVS diode for protection against over voltage transients. Its low capacitance, fast response, and wide supply voltage range make it ideally suited for applications requiring over voltage protection of sensitive electronic components. Its breakdown voltage of 6.1V and maximum clamping voltage of 11.6V make it well-suited for the majority of general over voltage protection applications.

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