MXPLAD7.5KP48A Circuit Protection

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TVS-Diodes – MXPLAD7.5KP48A Application Field and Working Principle

Transient Voltage Suppression (TVS) diodes are electronic components used to protect sensitive circuits from electrical overvoltage. These components are also known as surge suppressors, spike protectors, clampers or protectors. They are widely employed in electrical products to protect circuits from transient voltage spikes (or surges) such as those caused by electrical storms, electrostatic discharge (ESD), or lightning strikes. MXPLAD7.5KP48A is an unidirectional device which means that it conducts current only from anode to cathode and not in the reverse direction.

This device belongs to the family of TVS-Diodes which are designed for transient voltage protection applications. Its application field revolves around bidirectional transient voltage suppressors (TVS) designed to protect two lines from voltage transients induced by lightning on Ethernet, LAN, power lines, or other communication lines.

The MXPLAD7.5KP48A device comprises of a unique design which integrates surge current, clamp bolt and ESD protection without sacrificing performance. This device meets the highest requirements of the IEC 61000-4-2 for surge protection, with integrated dual protector cells capable of handling the highest possible surge current of 2.5KA (8/20µs waveform).

Its working principle is quite straightforward wherein it absorbs transient energy introduced to the protected power and/or communication lines immediately. The device clamps the transient voltage to a specified maximum level by becoming electrically active only during an overvoltage event. Additionally, it returns ‘off state’ when power contained in the surge has been dissipated. Thus it protects devices from damage due to the high power spikes that could potentially change its functioning.

MXPLAD7.5KP48A features high surge current capability, low leakage current, and ultra-low capacitance. Its low package profile enables excellent high frequency noise rejection. With a peak pulse power rating of 7500W and a clamping voltage of 22.5V, the device provides superior protection to signals and power lines. An additional benefit of using these suppressors is that they have low capacitance, which ensures maintenance of signal integrity allowing signals to pass through with minimal distortion.

The device is applicable to industrial control systems, cable modems, routers and hubs, Ethernet power, and other applications requiring superior protection from transient voltages such as ESD and lightning. It is capable of withstanding extreme ESD strikes of 8kV contact discharge and 15kV air discharge. They are an economical choice of protection for many power and communication systems.

In conclusion, the MXPLAD7.5KP48A device is a high performance TVS-Diode designed to protect sensitive electronics from transient voltage surges in industrial control systems, cable modems, routers and hubs, Ethernet power, and other communication systems. With its high surge current capability, low leakage current, and ultra-low capacitance, this device offers superior signal integrity and excellent noise rejection in a low profile package.

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