MXSMCJ28CAE3 Circuit Protection

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Today in our burgeoning technology industry, there is a renewed interest in TVS diodes. As components critical for ensuring the safety of crucial and sensitive circuits, these devices have become increasingly important. This article serves as a guide to help shed light on the subject by looking at the MXSMCJ28CAE3 application field and working principle.

Description of the MXSMCJ28CAE3

The MXSMCJ28CAE3 is a surface-mount unidirectional TVS diode. It operates as a bidirectional diode in which the signal is switched rapidly from anode to cathode depending on the voltage applied to it. As a diode, the MXSMCJ28CAE3 is able to convert AC signals into DC signals. This is similar to a traditional Zener diode, but the difference is that it is specially designed and enhanced for automotive applications.

The MXSMCJ28CAE3 is designed with a miniature 0.76 mm pitch and is fully compliant with JEDEC JESD51-17, which is an international standard for designing and engineering semiconductor components. It is a high temperature soldering rated components, so it has a high temperature threshold of up to 260°C and is able to withstand extreme environmental conditions without degrading.

The MXSMCJ28CAE3 is available in in a variety of voltage ratings, from 5V to 12V. It is also able to withstand peak surge currents of up to 600mA.

Application Field for the MXSMCJ28CAE3

The MXSMCJ28CAE3 is mainly used in automotive applications, particularly in engine-control systems. The device provides surge and ESD protection for ECU circuits that control various vehicle systems. It is highly reliable and is able to ensure the safe functioning of the systems.

In addition to automotive applications, the MXSMCJ28CAE3 is also used in other fields such as telecommunications, industrial machinery, and consumer electronics. It is an ideal and cost-efficient solution for these applications due to its high reliability and compact size.

Working Principle of the MXSMCJ28CAE3

The MXSMCJ28CAE3 works on the principle of a Zener diode. A Zener diode contains two regions where one is positively charged while the other is negatively charge. The diode is designed such that when a current passes through the two regions, the positive region acts as the anode and the negative one as the cathode. When the voltage exceeds the breakdown voltage or zener voltage, the diode "breaks down" and creates a conductive path between the two terminals, allowing current to flow.

In the case of the MXSMCJ28CAE3, this breakdown voltage is set at a minimum of 5V, so once the applied voltage exceeds this level, it creates a conductive path that serves as both a draining point for electrostatic and radio frequency currents, and a means for diverting energy away from sensitive components. This ensures that no permanent damage is done to the surrounding circuitry.

The other feature of this device is its ability to provide unidirectional protection from electrostatic discharges. This is why it is particularly suited for use in automotive applications where unprotected circuits need to be prevented from experiencing shocks due to high-voltage spikes.

Conclusion

The MXSMCJ28CAE3 is a versatile and reliable unidirectional TVS diode that is used for a wide range of applications. Its operation is based on the principle of a Zener diode and provides effective protection from electrostatic and radio frequency energy. It is specifically designed to withstand extreme temperatures and is able to provide efficient surge protection for numerous automotive and non-automotive applications.

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