MXLPLAD15KP28CA

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Transient voltage suppressors (TVSs) are semiconductor components, also known as clamping diodes, that operate to suppress transient voltages or surges, while allowing normal signals to pass unaffected. They hold many advantages over alternative methods, such as metal-oxide varistors or gas discharge tubes, due to their small component size and fast response time. The M XLPLAD15KP28CA is one of the most popular surge protection products available in the market, and functions to protect communication lines and signal traces from being damaged by large overvoltages. This paper outlines the application field and working principle of the M XLPLAD15KP28CA transient voltage suppressor.

Application Field

The M XLPLAD15KP28CA is a unidirectional TVS with outstanding performance characteristics. It is designed for signal and data line protection in consumer electronics, industrial, automotive, and military applications. These devices protect against both overvoltage and overcurrent surges up to 15kV and 9A respectively, and their ultra-low capacitance makes them ideal for high-speed ESD and lightning protection.

The low reverse leakage current of the M XLPLAD15KP28CA ensures that there is no current flow when the device is at rest, making it particularly suitable for low-power designs. Furthermore, its robust construction and small footprint make it highly attractive for use in military applications. Finally, with its asymmetrical clamping behavior, the device is well-suited for use with Ethernet applications.

Working Principle

The working principle of the M XLPLAD15KP28CA is based on drawing current away from data lines in the event of a surge exceeding a certain voltage threshold. The diode passes a small amount of current whenever a voltage reaches a certain threshold, clamping the voltage and preventing it from further rising, in order to protect the equipment. This is accomplished by a combination of two effects:

1. Reducing the breakdown voltage of the diode- The M XLPLAD15KP28CA utilizes an internal structure composed of multiple p-n junctions (aligned in series) to reduce the breakdown voltage.

2. Increasing the current capacity of the diode- When the voltage exceeds the breakdown voltage, the device utilizes an internal structure that allows for greater current-carrying capacity, allowing it to absorb larger surges without being damaged.

The device’s clamping action is extremely fast, with response times as low as 25ns for 15kV events. This extremely fast response time ensures that the device can efficiently protect sensitive equipment in the event of a surge.

Conclusion

The M XLPLAD15KP28CA is an excellent choice for the protection of data lines and signal traces against overvoltages and overcurrents. With its small component size, low capacitance, fast response time, and robust construction, the device is ideal for a wide range of applications. This paper has outlined the application field and working principle of the M XLPLAD15KP28CA transient voltage suppressor.

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