USB50815CE3/TR7 Circuit Protection

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It is important to understand the application field of USB50815CE3/TR7 (TVS – Diodes) and its working principle for efficient use and implementation. TVS diodes are special high-speed transistors which are used for protection from electrostatic discharge, surges, and various high-voltage threats. The USB50815CE3/TR7 offers very high pulse-current-handling capabilities over a wide operating temperature range.

Features and Benefits of TVS – Diodes

TVS – Diodes offer a number of features and benefits to users. They provide high surge-current and breakdown-voltage capability, fast response time, and excellent power dissipation. TVS-diodes also possess very low capacitance and series inductance, resulting in low overshoot and ringing at the output. Furthermore, they feature very low typical series resistance, allowing for excellent energy dissipation. This makes them ideal for filtering pulses of high voltages or currents.

Applications of TVS – Diodes

An essential application of USB50815CE3/TR7 is in communication circuits. The device is used for protecting modem lines and other communication ports from overvoltage surges, ESD, and power supply noise. It is also a popular choice for protecting overvoltage conditions in automotive, industrial, and consumer applications. In addition, it is widely used in portable devices and computers for protection against power cross and surge transients.

Working Principle of USB50815CE3/TR7

The working principle of USB50815CE3/TR7 is based on the avalanche breakdown mechanism. It has an internal Zener diode connected in reverse-bias configuration, which is a low-impedance path for an ESD pulse. The device has a breakdown voltage between 5 V (minimum) and 16 V (maximum), which is suitable for protecting against most common ESD threats. When an ESD pulse arrives at the device, the Zener diode acts as a low-impedance path and begins to breakdown, thus allowing the ESD current to flow away to ground.

During an overvoltage event, the diode blocks the current flow in both directions, preventing it from reaching the protected circuit. As a result, the circuit is protected from the overvoltage, while the excessive voltage is dissipated over the diode’s avalanche breakdown capacity.

Conclusion

The USB50815CE3/TR7 (TVS – diode) is a device that offers high surge-current and breakdown-voltage capability, fast response time, and excellent power dissipation. It is widely used for communication circuit protection, automotive, industrial, and consumer applications, and portable device protection. The device works based on the avalanche breakdown mechanism, which is triggered by an ESD pulse or an overvoltage event. The USB50815CE3/TR7 is a reliable and efficient device for a wide range of applications.

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