MXLSMBJ54CAE3 Circuit Protection

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A Transient Voltage Suppressor (TVS) diode – such as the MXLSMBJ54CAE3 – provides over-voltage protection for circuits against electrical transients and is used extensively in power supplies, DC-DC converters, signal lines, and other systems that need to remain functional over a wide range of voltage and power conditions.

These devices are diodes that can be used for protecting power-electronic circuits from transients such as electrostatic discharge (ESD) and lightning, as well as for providing some protection against surges on AC power-line and data-line applications. TVS diodes are also commonly used in applications that require higher level ESD protection, such as electro-explosive devices (EED), class III equipment, and high capacitance lines.

Working Principle

TVS devices work by clamping the transient voltage to safe levels. When the voltage of a circuit rises above a certain threshold, the diode becomes conductive and a clamping voltage is created across the device. This clamping voltage is then applied to the circuit, effectively reducing the voltage to a safe level. The diode will then remain in theconductive state until the transient voltage is reduced to a safe level, at which point the diode will turn off and the voltage applied to the circuit will be reduced.

The MXLSMBJ54CAE3 is a 6-pin surface-mount diode in a DFN package that provides over-voltage protection between 12V and 60V. It has an avalanche rating of 500W and a clamping voltage of 42V. It can be used as a single diode or in circuits that require multiple transient protection and can withstand ESD strikes up to 25kV. It also has an internal 1.5 ohm series resistance.

Application Field

The MXLSMBJ54CAE3 is suitable for applications such as automotive, aerospace, and military environments, where an ESD rating exceeding 25kV is necessary. It is also used in commercial and industrial power supplies, DC-DC converters, signal lines, and other circuits that may be subject to high voltage transients. The device is often used to provide protection for sensitive electronic components, such as integrated circuits and transistors, from over-voltage spikes in the power supply or other electrical transients.

In addition, the MXLSMBJ54CAE3 can be used in conjunction with fuses, varistors, or other protective components to provide further protection against surges, ensuring the safe operation of circuits in their desired environment. The device is also capable of withstanding extreme temperature ranges, making it suitable for use in a variety of harsh environments.

The MXLSMBJ54CAE3 is a robust and reliable device that can be used in a variety of applications to protect sensitive circuits and components from over-voltage transients. It is capable of withstanding higher voltages and ESD and its robust construction make it suitable for use in extreme environments. With its low series resistance and high clamping voltage, the diode can provide effective protection for circuits in a wide range of applications.

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