MX1.5KE20CA Circuit Protection

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The MX1.5KE20CA is a transient voltage suppression (TVS) diode designed to protect sensitive electronic components from damaging electro-static discharges (ESD), surges, and other voltage-induced events. This device is composed of two structures: a Zener diode and a MOSFET. The Zener diode provides the voltage clamping protection, while the MOSFET has the capability of fast switching, capable of protection during high-speed transients.

The MX1.5KE20CA provides excellent protection against ESD, EFT, and surge events. It has a very low dynamic resistance value of 0.2 Ohm and the ability to withstand a peak pulse current of 1000A. This makes it suitable for use in applications where electro-static discharge and other EMI/RFI protection is necessary, such as in industrial, consumer electronics, automotive, military, and medical applications.

The working principle of the MX1.5KE20CA is based on the Zener diode and MOSFET combination. When an overvoltage event is present, the Zener diode reaches its breakdown voltage, which causes it to become conductive and redirects the excess voltage away from the protected components. The MOSFET is then activated, and switches between its ON and OFF states in order to control the flow of the current. In this way, the MOSFET serves as a fast switch that limits the peak current and keeps the voltage level below the breakdown levels.

In addition to protecting against ESD, EFT and surge events, the MX1.5KE20CA also helps reduce radiated emissions and noise when connected to exposed signal lines. This is because the low dynamic resistance value of 0.2 Ohm allows it to absorb and dissipate signal noise generated by devices operating at high frequencies.

Overall, the MX1.5KE20CA is a versatile and reliable protection diode that is suitable for use in a variety of applications. Its combination of low dynamic resistance, fast switching capability, and good temperature stability make it particularly well-suited for use in applications that require EMI/RFI filtering and protection against ESD, surges, and other voltage-induced events.

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