MX1.5KE130CAE3 Circuit Protection

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TVS - Diodes are devices that protect electronic components from overvoltage, the most common of which is the Transient Voltage Suppressor (TVS) Diode. The MX1.5KE130CAE3 is a kind of TVS - Diode which protects sensitive components from voltage transients induced by lightning and other transient voltage events. This device is widely used in automotive, industrial, and consumer electronics.

The MX1.5KE130CAE3 is a unidirectional (uni-directional) device, meaning it provides protection from voltage in only one direction - in this case, from positive to negative. It is an Ultra Low Capacitance (ULC) diode, meaning it has a very low capacitance compared to other TVS diodes, and is designed to protect high-speed data communication lines. The device is designed to protect against transients as long as 6 nanoseconds (ns) allow it to offer protection from both the steady voltage and any transient voltage spikes that may occur.

The MX1.5KE130CAE3 is not just designed for high-speed communication, it can also be used in any situation where a low capacitance is helpful or necessary. Examples include power supply systems, DC/DC converters, and ESD protection for circuits and components. The diode is also suitable for use in applications such as military or aerospace applications which require protection from high electrostatic discharge (ESD) or electromagnetic interference (EMI).

The working principle of the MX1.5KE130CAE3 is quite simple. It consists of two components - a Zener diode and a "crowbar" transistor. The Zener diode protects against low-level overvoltage and the transistor provides additional protection against higher voltage. When a voltage transient exceeds the Zener breakdown voltage, the gate of the transistor is opened, shorting the transient voltage to GND. This prevents it from reaching the protected circuit, eliminating the risk of damage.

When the voltage transient goes below the Zener breakdown voltage, the transistor turns off and the protection circuit is reset. The entire process takes only a few nanoseconds, which is much faster than traditional fuses that can take several milliseconds to react. The MX1.5KE130CAE3 is also capable of withstanding high transient energy pulses, up to 500 W peak.

In summary, the MX1.5KE130CAE3 is an Ultra Low Capacitance diode designed to protect sensitive components from voltage transients induced by lightning and other transient voltage events. The diode is widely used in automotive, industrial, and consumer electronics applications. It consists of two components - a Zener diode and a "crowbar" transistor - and its working principle is to short out any transients that exceed the Zener breakdown voltage.

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