USBQ50415E3/TR7

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TVS diodes are often used in a wide range of consumer electronics, automotive, aerospace, and industrial applications, providing protection against voltage transients and surges. The USBQ50415E3/TR7 is a popular TVS diode used in many of these applications. It offers fast protection from low energy transients caused by static electricity or lightning. Understanding the applications and principles of this device is important in order to select the right component for the job.

Application Field

The USBQ50415E3/TR7 is a three line protection device for use in consumer electronics and automotive applications. It can be used for transients caused by electrostatic discharge (ESD) and lightning. It provides low clamping voltage over all three lines. The USBQ50415E3/ TR7 is rated for an ESD protection up to 25 kV (8 kV on human body model) and has a peak surge current of 59 A (8/20 μs). Additionally, its low leakage current performance make it suitable for use in battery powered devices. It offers excellent common and normal modes protection of power, data, and other sensitive lines, such as MOSFETS.

Working Principle

The USBQ50415E3/TR7 is constructed of two MOSFETs connected back-to-back in parallel with a zener diode. It is designed to protect the user’s equipment from electrical transients caused by static electricity or lightning. When connected to a power supply, it acts as a shunt between the power supply and the device being protected. When a transient voltage appears on the line, the MOSFETs will respond quickly and the zener diode will clamp the voltage at a specific level to prevent the transient from damaging the protected device. This ensures that only the transient voltage is dissipated by the USBQ50415E3/TR7, while allowing the normal operation of the equipment to continue undisturbed.

The zener diode in the USBQ50415E3/TR7 is designed to provide a specific and constant voltage clamping level. This is necessary for maximum product performance and safety. The clamping voltage of the device will depend on the application, as well as the operating temperature of the device. If the voltage of the transient exceeds the clamping voltage, the device can be damaged or the device’s protection may be compromised.

In order to ensure that the USBQ50415E3/TR7 is providing the best protection possible, it is important to select the correct device for the operating environment. This includes selecting the right wattage for the application, as well as the proper surge handling specifications. Additionally, it is also important to consider the board layout and line configuration when using the device.

Conclusion

The USBQ50415E3/TR7 is a popular TVS diode used in a wide range of consumer electronics and automotive applications. It provides fast protection from low energy transients caused by static electricity or lightning, while offering excellent common and normal modes protection of sensitive lines. The device utilizes two MOSFETs connected back-to-back in parallel with a zener diode to provide a specific voltage clamping level and dissipate the transient voltage. Understanding the applications and principles of this device is important when selecting it for the job.

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