USB50815/TR7 Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are a special class of device used to limit damaging surge currents. The USB50815/TR7 is a unique type of TVS diode designed to protect against lightning strikes. Its\'s applications and working principle are detailed below.

Application Field

The USB50815/TR7 is an ideal solution for protection against high frequency transients such as lightning induced surges. It can be used in a variety of applications including outdoor transmission lines, satellites, communications system applications, and anywhere else where high power transients may occur. The device is suitable for automotive and industrial environments, and CAN be used in applications up to 1200V.

Working Principle

The USB50815/TR7 employs voltage-salient-blocking capability, which is a form of dynamic protection. It monitors the voltage levels on a line, and when the voltage level rises above a certain threshold, the device turns on, limiting the voltage to a safe level. The device will then reset itself when the transient has passed.

The USB50815/TR7 employs a two-stage protection mechanism. When the line voltage rises beyond a certain threshold, the device will trigger and clamp the voltage level. The device also provides reverse polarity protection, ensuring that the line is protected from reverse current surge. Additionally, the device also features a fast response time of less than 2 nano seconds.

Apart from these two key features, the USB50815/TR7 also has a low clamping voltage (roughly 1V) and extremely low leakage current of less than 5 nA. The device is hermetically sealed with a silicone coating for maximum protection. It comes in a RoHS-compliant, industry-standard 8-Pin SOIC (Surface-Mounted Outline Integrated Circuit) package and measures only 5.2 mm x 3.2 mm.

In summary, the USB50815/TR7 is a unique TVS diode designed to protect against high frequency transients such as lightning induced surges. It has a wide range of applications, a low clamping voltage, fast response time and low leakage current. The device is hermetically sealed and comes in an industry-standard 8-Pin SOIC package.

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