USB50805E3/TR7 Circuit Protection

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Transient Voltage Suppressor (TVS) diodes are widely used to absorb transient voltage surges in order to protect the circuits from overvoltage damage. The USB50805E3/TR7 is a TVS diode with low capacitance, suitable for ESD and Transient suppression in high speed applications. It offers better functional protection in applications such as telecommunication, computers, consumer electronics, and automotive.

Application Area of USB50805E3/TR7

The USB50805E3/TR7 is a multi-purpose diode with a variety of applications. It is mainly used to prevent ESD or static electricity from causing electro-mechanical damage in a device. It can be used in a variety of communication applications like RS-485, gigabit ethernet, and USB. It is also suitable for I/O ports protection in portable electronic devices such as PDAs and cellular phones. Moreover, it can be used for in-circuit testing, ESD protection, current limiting, transient protection, and load switching.

Working Principle of USB50805E3/TR7

The USB50805E3/TR7 is a diode that protects against high-voltage transients caused by ESD and other electrical disturbances. It consists of two zones of reverse-biased avalanche breakdown junctions, each of which can detect transient voltages. When a voltage above the breakdown voltage is applied to the diode, the conduction of the reverse biased junction increases, diverting current through the diode. This current then dissipates as heat. The diode also has four layers of capacitive elements to suppress any high frequency components of the transient voltage spike.

The USB50805E3/TR7 is specially designed to provide both high surge capability and low capacitance to protect against ESD and other overvoltage transient events. The diode is designed with a low capacitance of 4pF, making it suitable for use on high-speed interfaces. The diode also has a high standoff voltage of 20V and can absorb up to 36A of peak current with a clamping voltage of 21.7V. Additionally, the diode can handle up to 8 kV of ESD protection per IEC 61000-4-2.

Conclusion

The USB50805E3/TR7 is a multi-functional diode designed to provide protection against ESD and overvoltage transients. It has high surge capability and low capacitance, making it suitable for use in high-speed applications. The diode offers a high level of functional protection and can absorb up to 36A of peak current with a clamping voltage of 21.7V. It also offers 8 kV of ESD protection per IEC61000-4-2. The USB50805E3/TR7 is an ideal choice for protecting communication applications and I/O ports of portable electronic devices.

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