MXSMBJ75CAE3 Circuit Protection

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Transient voltage suppression (TVS) diodes are solid-state, bidirectional current devices brought into circuit designs to protect electronic components. They act to contain undesired electrical elements (including voltage surges) and flow between two points, protecting the circuitry from over-voltage conditions. As such, TVS diodes are an important tool used by electrical engineers to protect sensitive components from electrical surges or spikes meant to ensure the reliability of a circuit.

Specifically, the MXSMBJ75CAE3 is a Unidirectional type TVS diode highly suited for the protection of sensitive components such as microprocessors, integrated circuits and other digital and analogue components. It has an avalanche energy rating of 5.8mJ and a peak pulse current rating of 700 Amp, making it a very capable device for overvoltage protection. It has a wide operating range, with operating voltages spanning from 30 volts to 75 volts, and also has a very fast response time of about 1ns. The MXSMBJ75CAE3 also has a high surge handling capability, and can protect against sustained voltage transients up to 1,000 volts.

In terms of application fields, the MXSMBJ75CAE3 is suitable for use in a variety of electronic circuits, from computer systems and data processing equipment to power supplies, mobile phones, music players, and other electronic devices. It is also used frequently in automotive applications, where it can guard against a wide range of overvoltage events.

In terms of working principle, TVS diodes use a reverse biased pn-junction diode to protect circuits against overvoltage events, by clamping or shunting away voltage exceeding the breakdown voltage limit of the diode to the ground. The high surge current capability of the MXSMBJ75CAE3 is essential to protect circuits from overvoltage events caused by transient voltage spikes, EFT (electrical fast transients) and electrical surge. When subjected to a surge, the diode “fires” due to its rapid response time, clamping the voltage spike to either side of the diode and quickly discharging it to ground.

The MXSMBJ75CAE3 is extremely well-suited to its application, as it has been designed and tested to provide superior overvoltage protection in applications involving power surges up to 1000 volts. Its combination of high surge current capability, fast response time and wide operating range make it an excellent choice for engineers looking to protect sensitive components from voltage surge.

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