MART100KP300CAE3

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TVS diodes, also known as transient voltage suppressors, are widely used for protection against over-voltage transients. The MART100KP300CAE3 is a unidirectional TVS diode, meaning it can protect against over-voltage transients applied in a single direction. It is part of the advanced Transient Voltage Suppressor (TVS) family offered by Monolithic Power Systems (MPS). This particular TVS diode is a low breakdown voltage, double-zener diode array, designed for transient protection.

MART100KP300CAE3 is specifically designed for protecting data line application such as USB 2.0, USB 3.1, RS232, RS485, Ethernet and other digital and communication line protection, with low capacitance, high voltage and peak surge capability compliant with IEC standards. This device provides robust ESD protection and is compliant with IEC 61000-4-2 (ESD) ± 8kV (air/contact discharge) and IEC 61000-4-4 (Burst/Surge) 50A (common mode), 30A (differential mode). It also offers pulse surge protection with a 150A (8/20µs) peak pulse current rating and a working voltage of 100V (DC Breakdown Voltage).

The working principle of the MART100KP300CAE3 can be described as follows. When there is a pulse at a junction of two diode branches, the TVS will clamp the voltage at a predetermined level, depending on the the breakdown voltage of the diode. It acts as a clamp, absorbing excess voltage and allowing the voltage to rise to a predetermined level without damaging any other components.

In addition, TVS diodes also have ESD protection, which is used to protect sensitive electronic components from electrostatic discharge. When a voltage transient (such as an electrostatic discharge) occurs, the TVS’s anode and cathode become conductive and a current flows through the diode. This current then discharges to ground and the excess energy is dissipated as heat. By doing so, the TVS diode helps to protect the underlying electronic components from damage.

In short, the MART100KP300CAE3 is a unidirectional TVS diode which provides robust protection against over-voltage transients and ESD protection. It is designed for data line protection, such as USB 2.0, USB 3.1, RS232, RS485 and Ethernet and is compliant with IEC standards. The device works by clamping the voltage at a predetermined level and discharging excess energy as heat when a voltage transient or ESD pulse occurs. As such, it provides a reliable and effective way of protecting sensitive and expensive electronic components from damage.

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