1N6042A Circuit Protection

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TVS - Diodes

A Transient Voltage Suppressor (TVS) diode is an electronic component which is used to protect other electronic circuits from transients or harmful power fluctuations. There are many different types of TVS diodes and they are classed according to their specific application field and their working principle. One example of a TVS diode is the 1N6042A. This is a transient voltage suppressor diode used in communications applications such as cellular phones and satellite radio.

1N6042A Application Field

The 1N6042A diode is a Unidirectional ESD TVS Diode, designed to protect sensitive electronic components and circuits from electro-static discharges (ESDs), electro-magnetic discharges (EMDs), and other transients. It is used in a variety of applications such as, mobile devices, PDA\'s, computer peripherals, DC-DC converters, and telecom switching equipment. The 1N6042A is RoHS compliant and available in SOD-323 package options.

1N6042A Working Principle

The working principle of the 1N6042A is based on the avalanche breakdown that occurs when hot carriers are accelerated in the reverse direction. When an ESD pulse or transient voltage is applied to the diode the carriers in the depletion region are accelerated due to the electric field, and in turn produce further carriers. This is known as avalanche breakdown. By combining a suitable doping profile and oxide thickness, the device is able to withstand the transient without damaging the equipment or interrupting service.

When the 1N6042A is subjected to a voltage of 9.5 volts or more, avalanche breakdown occurs. The voltage is then clamped by the device, due to the generation of carriers, and then rapidly decays to a safe level. This clamped voltage is the peak reverse voltage (PVR) of the 1N6042A. The breakdown of the device is fast and efficient and ensures that the circuit is not damaged or interrupted by the transient.

Conclusion

The 1N6042A is a general purpose transient voltage suppressor diode that is used to protect electronic components and circuits from ESDs, EMDs, and other transients. It works by employing avalanche breakdown as the method of voltage suppression. The device has a reverse breakdown voltage of 9.5 volts and rapidly decays to a safe level. The 1N6042A is RoHS compliant and available in SOD-323 package options, making it an ideal choice for a wide range of applications.

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